diff --git a/language.version b/language.version
index 634a2c7bb..6b641a33f 100644
--- a/language.version
+++ b/language.version
@@ -1,3 +1,3 @@
 [default]
-SWWM_MODVER="\cyDEMOLITIONIST \cw1.3pre r98 \cu(Tue  7 Jun 13:33:10 CEST 2022)\c-";
-SWWM_SHORTVER="\cw1.3pre r98 \cu(2022-06-07 13:33:10)\c-";
+SWWM_MODVER="\cyDEMOLITIONIST \cw1.3pre r99 \cu(Tue  7 Jun 13:42:13 CEST 2022)\c-";
+SWWM_SHORTVER="\cw1.3pre r99 \cu(2022-06-07 13:42:13)\c-";
diff --git a/zscript/items/swwm_armor.zsc b/zscript/items/swwm_armor.zsc
index 7d2b13571..dcb32a592 100644
--- a/zscript/items/swwm_armor.zsc
+++ b/zscript/items/swwm_armor.zsc
@@ -27,7 +27,7 @@ Class ArmorNuggetItem : SWWMSpareArmor
 		// sell excess
 		if ( !bUsed )
 		{
-			int sellprice = int(abs(Stamina)*.5);
+			int sellprice = abs(Stamina)/2;
 			SWWMScoreObj.Spawn(sellprice,Owner.Vec3Offset(FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8)+Owner.Height/2));
 			SWWMCredits.Give(Owner.player,sellprice);
 			if ( Owner.player )
diff --git a/zscript/items/swwm_baseitem.zsc b/zscript/items/swwm_baseitem.zsc
index fb281e49c..473672a95 100644
--- a/zscript/items/swwm_baseitem.zsc
+++ b/zscript/items/swwm_baseitem.zsc
@@ -15,7 +15,7 @@ Mixin Class SWWMAutoUseFix
 			// sell excess if there's a price
 			if ( !deathmatch && bALWAYSPICKUP && (Amount+item.Amount > MaxAmount) && (Stamina != 0) )
 			{
-				int sellprice = int(abs(Stamina)*.5);
+				int sellprice = abs(Stamina)/2;
 				SWWMScoreObj.Spawn(sellprice,Owner.Vec3Offset(FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8)+Owner.Height/2));
 				SWWMCredits.Give(Owner.player,sellprice);
 				if ( Owner.player )
diff --git a/zscript/items/swwm_health.zsc b/zscript/items/swwm_health.zsc
index e456f8b85..1fd6384c1 100644
--- a/zscript/items/swwm_health.zsc
+++ b/zscript/items/swwm_health.zsc
@@ -73,7 +73,7 @@ Class HealthNuggetItem : SWWMHealth
 		// sell excess
 		if ( !bUsed )
 		{
-			int sellprice = int(abs(Stamina)*.5);
+			int sellprice = abs(Stamina)/2;
 			SWWMScoreObj.Spawn(sellprice,Owner.Vec3Offset(FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8)+Owner.Height/2));
 			SWWMCredits.Give(Owner.player,sellprice);
 			if ( Owner.player )
diff --git a/zscript/items/swwm_powerups.zsc b/zscript/items/swwm_powerups.zsc
index bda0b34cb..8044273dc 100644
--- a/zscript/items/swwm_powerups.zsc
+++ b/zscript/items/swwm_powerups.zsc
@@ -1896,7 +1896,7 @@ Class SWWMLamp : Inventory
 			if ( (Charge >= Default.Charge) && (Amount+item.Amount > MaxAmount) )
 			{
 				// sell excess
-				int sellprice = SWWMUtility.Round100(Stamina*.7);
+				int sellprice = SWWMUtility.Round100(abs(Stamina)*.7);
 				SWWMScoreObj.Spawn(sellprice,Owner.Vec3Offset(FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8)+Owner.Height/2));
 				SWWMCredits.Give(Owner.player,sellprice);
 				if ( Owner.player )
diff --git a/zscript/weapons/swwm_baseweapon.zsc b/zscript/weapons/swwm_baseweapon.zsc
index f42354885..d5bdc9390 100644
--- a/zscript/weapons/swwm_baseweapon.zsc
+++ b/zscript/weapons/swwm_baseweapon.zsc
@@ -193,10 +193,10 @@ Class SWWMWeapon : Weapon abstract
 		{
 			// subtract price of ammo we don't give
 			int ammonotgiven = default.AmmoGive1-AmmoGive1;
-			if ( ammonotgiven > 0 ) Stamina -= int(ownedWeapon.Ammo1.Stamina*(1.+.75*(ammonotgiven-1)));
+			if ( ammonotgiven > 0 ) Stamina -= int(abs(ownedWeapon.Ammo1.Stamina)*(1.+.75*(ammonotgiven-1)));
 			// subtract price of given ammo
 			int ammogiven = ownedWeapon.Ammo1.Amount-oldamount1;
-			if ( ammogiven > 0 ) Stamina -= int(ownedWeapon.Ammo1.Stamina*(1.+.75*(ammogiven-1)));
+			if ( ammogiven > 0 ) Stamina -= int(abs(ownedWeapon.Ammo1.Stamina)*(1.+.75*(ammogiven-1)));
 			// drop excess
 			int dropme = AmmoGive1-ammogiven;
 			if ( dropme > 0 )
@@ -210,10 +210,10 @@ Class SWWMWeapon : Weapon abstract
 		{
 			// subtract price of ammo we don't give
 			int ammonotgiven = default.AmmoGive2-AmmoGive2;
-			if ( ammonotgiven > 0 ) Stamina -= int(ownedWeapon.Ammo2.Stamina*(1.+.75*(ammonotgiven-1)));
+			if ( ammonotgiven > 0 ) Stamina -= int(abs(ownedWeapon.Ammo2.Stamina)*(1.+.75*(ammonotgiven-1)));
 			// subtract price of given ammo
 			int ammogiven = ownedWeapon.Ammo2.Amount-oldamount2;
-			if ( ammogiven > 0 ) Stamina -= int(ownedWeapon.Ammo2.Stamina*(1.+.75*(ammogiven-1)));
+			if ( ammogiven > 0 ) Stamina -= int(abs(ownedWeapon.Ammo2.Stamina)*(1.+.75*(ammogiven-1)));
 			// drop excess
 			int dropme = AmmoGive2-ammogiven;
 			if ( dropme > 0 )
@@ -234,10 +234,10 @@ Class SWWMWeapon : Weapon abstract
 		{
 			if ( SWWMWeapon(item).PickupForAmmoSWWM(self) )
 				item.bPickupGood = true;
-			if ( !deathmatch && (Amount+item.Amount > MaxAmount) && (item.Stamina > 0) )
+			if ( !deathmatch && (Amount+item.Amount > MaxAmount) && (item.Stamina != 0) )
 			{
 				// sell excess
-				int sellprice = item.Stamina/2;
+				int sellprice = abs(item.Stamina)/2;
 				SWWMScoreObj.Spawn(sellprice,Owner.Vec3Offset(FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8)+Owner.Height/2));
 				SWWMCredits.Give(Owner.player,sellprice);
 				if ( Owner.player )
diff --git a/zscript/weapons/swwm_splode.zsc b/zscript/weapons/swwm_splode.zsc
index 68576ed54..dda03eaea 100644
--- a/zscript/weapons/swwm_splode.zsc
+++ b/zscript/weapons/swwm_splode.zsc
@@ -40,10 +40,10 @@ Class ExplodiumGun : SWWMWeapon
 			return true;
 		if ( (item.GetClass() == 'ExplodiumGun') && !item.ShouldStay() )
 		{
-			if ( !deathmatch && (Amount+item.Amount > MaxAmount) && (Stamina > 0) )
+			if ( !deathmatch && (Amount+item.Amount > MaxAmount) && (item.Stamina != 0) )
 			{
 				// sell excess
-				int sellprice = int(Stamina*.5);
+				int sellprice = abs(item.Stamina)/2;
 				SWWMScoreObj.Spawn(sellprice,Owner.Vec3Offset(FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8)+Owner.Height/2));
 				SWWMCredits.Give(Owner.player,sellprice);
 				if ( Owner.player )
diff --git a/zscript/weapons/swwm_tastytreat.zsc b/zscript/weapons/swwm_tastytreat.zsc
index 2c093939f..afd63ab3c 100644
--- a/zscript/weapons/swwm_tastytreat.zsc
+++ b/zscript/weapons/swwm_tastytreat.zsc
@@ -23,7 +23,7 @@ Class CandyGun : SWWMWeapon
 			if ( !deathmatch && !spareget )
 			{
 				// sell excess
-				int sellprice = item.Stamina/2;
+				int sellprice = abs(item.Stamina)/2;
 				SWWMScoreObj.Spawn(sellprice,Owner.Vec3Offset(FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8),FRandom[ScoreBits](-8,8)+Owner.Height/2));
 				SWWMCredits.Give(Owner.player,sellprice);
 				if ( Owner.player )