diff --git a/Tactical/Overhead.cpp b/Tactical/Overhead.cpp
index 1ca23cd9b..95478d421 100644
--- a/Tactical/Overhead.cpp
+++ b/Tactical/Overhead.cpp
@@ -8008,7 +8008,7 @@ INT8 CalcSuppressionTolerance( SOLDIERTYPE * pSoldier )
     }
 
 	// Flugente: add personal bonus to suppresion tolerance
-	bTolerance += pSoldier->GetSuppressionResistanceBonus();
+	bTolerance = (bTolerance * (100 + pSoldier->GetSuppressionResistanceBonus() ) / 100);
 
     bTolerance = __max(bTolerance, gGameExternalOptions.ubSuppressionToleranceMin);
     bTolerance = __min(bTolerance, gGameExternalOptions.ubSuppressionToleranceMax);
diff --git a/Tactical/Soldier Add.cpp b/Tactical/Soldier Add.cpp
index b56083aa6..a6169098d 100644
--- a/Tactical/Soldier Add.cpp	
+++ b/Tactical/Soldier Add.cpp	
@@ -1492,7 +1492,7 @@ void AddSoldierToSectorGridNo( SOLDIERTYPE *pSoldier, INT32 sGridNo, UINT8 ubDir
 		fUpdateFinalPosition = FALSE;
 	}
 
-	// Flugente: if we are airdropping, center screen on the action adn remove soldier initially. He will be dropped into the sector by the helicopter
+	// Flugente: if we are airdropping, center screen on the action and remove soldier initially. He will be dropped into the sector by the helicopter
 	if ( pSoldier->bSoldierFlagMask & SOLDIER_AIRDROP )
 	{
 		pSoldier->bSoldierFlagMask &= ~SOLDIER_AIRDROP;
diff --git a/Tactical/Soldier Control.cpp b/Tactical/Soldier Control.cpp
index a2e975e34..0f16a7d07 100644
--- a/Tactical/Soldier Control.cpp	
+++ b/Tactical/Soldier Control.cpp	
@@ -14296,9 +14296,9 @@ INT32 SOLDIERTYPE::GetDamageResistance(BOOLEAN fAutoResolve, BOOLEAN fCalcBreath
 	
 	resistance += this->GetBackgroundValue(BG_RESI_PHYSICAL);
 
-	// resistance is between -100% and 100%
-	resistance = max(  0, resistance);
-	resistance = min(100, resistance);
+	// resistance is between -100% and 95%
+	resistance = max(-100, resistance);
+	resistance = min(  95, resistance);
 
 	return( resistance );
 }
@@ -16983,7 +16983,7 @@ INT16	SOLDIERTYPE::GetInterruptModifier( UINT8 usDistance )
 		bonus -= 3;
 
 	// if we are airdropping and do not have the 'airdrop' background, we receive a substantial malus to our interrupt level. Roping down takes a lot of attention
-	if ( this->bSoldierFlagMask & SOLDIER_AIRDROP_TURN && (this->GetBackgroundValue(BG_AIRDROP) == 0) )
+	if ( this->bSoldierFlagMask & SOLDIER_AIRDROP_TURN && (this->GetBackgroundValue(BG_AIRDROP) <= 0) )
 		bonus -= 8;
 					
 	return bonus;
diff --git a/Tactical/XML_Background.cpp b/Tactical/XML_Background.cpp
index 6cc3e0ed7..cb53c2b0c 100644
--- a/Tactical/XML_Background.cpp
+++ b/Tactical/XML_Background.cpp
@@ -368,7 +368,7 @@ backgroundEndElementHandle(void *userData, const XML_Char *name)
 		else if(strcmp(name, "resistance_physical") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_RESI_PHYSICAL] = min(XML_BACKGROUND_RESI_MAX, max(-XML_BACKGROUND_RESI_MAX, (INT8) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_RESI_PHYSICAL] = min(10, max(-10, (INT8) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "resistance_alcohol") == 0)
 		{
@@ -388,12 +388,12 @@ backgroundEndElementHandle(void *userData, const XML_Char *name)
 		else if(strcmp(name, "betterprices_guns") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_PRICES_GUNS] = min(20, max(-20, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_PRICES_GUNS] = min(10, max(-10, (INT16) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "betterprices") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_PRICES] = min(20, max(-20, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_PRICES] = min(10, max(-10, (INT16) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "capitulation") == 0)
 		{
@@ -403,7 +403,7 @@ backgroundEndElementHandle(void *userData, const XML_Char *name)
 		else if(strcmp(name, "speed_run") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_SPEED_RUNNING] = min(50, max(-50, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_SPEED_RUNNING] = min(30, max(-30, (INT16) atol(pData->szCharData) ));
 		}	
 		else if(strcmp(name, "speed_bandaging") == 0)
 		{
@@ -418,7 +418,7 @@ backgroundEndElementHandle(void *userData, const XML_Char *name)
 		else if(strcmp(name, "carrystrength") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_CARRYSTRENGTH] = min(50, max(-50, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_CARRYSTRENGTH] = min(20, max(-20, (INT16) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "food") == 0)
 		{
@@ -433,7 +433,7 @@ backgroundEndElementHandle(void *userData, const XML_Char *name)
 		else if(strcmp(name, "sleep") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_SLEEP] = min(2, max(-2, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_SLEEP] = min(1, max(-1, (INT16) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "meleedamage") == 0)
 		{
@@ -448,12 +448,12 @@ backgroundEndElementHandle(void *userData, const XML_Char *name)
 		else if(strcmp(name, "camo") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_CAMO] = min(20, max(-20, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_CAMO] = min(10, max(-20, (INT16) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "stealth") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_STEALTH] = min(20, max(-20, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_STEALTH] = min(10, max(-20, (INT16) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "increased_maxcth") == 0)
 		{
@@ -463,32 +463,32 @@ backgroundEndElementHandle(void *userData, const XML_Char *name)
 		else if(strcmp(name, "hearing_night") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_HEARING_NIGHT] = min(10, max(-10, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_HEARING_NIGHT] = min(2, max(-5, (INT16) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "hearing_day") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_HEARING_DAY] = min(10, max(-10, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_HEARING_DAY] = min(2, max(-5, (INT16) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "approach_friendly") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_APPROACH_FRIENDLY] = min(50, max(-50, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_APPROACH_FRIENDLY] = min(20, max(-50, (INT16) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "approach_direct") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_APPROACH_DIRECT] = min(50, max(-50, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_APPROACH_DIRECT] = min(20, max(-50, (INT16) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "approach_threaten") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_APPROACH_THREATEN] = min(50, max(-50, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_APPROACH_THREATEN] = min(20, max(-50, (INT16) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "approach_recruit") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_APPROACH_RECRUIT] = min(50, max(-50, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_APPROACH_RECRUIT] = min(20, max(-50, (INT16) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "breachingcharge") == 0)
 		{
@@ -498,7 +498,7 @@ backgroundEndElementHandle(void *userData, const XML_Char *name)
 		else if(strcmp(name, "cth_vs_creatures") == 0)
 		{
 			pData->curElement = ELEMENT;
-			pData->curBackground.value[BG_PERC_CTH_CREATURE] = min(20, max(-20, (INT16) atol(pData->szCharData) ));
+			pData->curBackground.value[BG_PERC_CTH_CREATURE] = min(10, max(-10, (INT16) atol(pData->szCharData) ));
 		}
 		else if(strcmp(name, "insurance") == 0)
 		{