diff --git a/source/games/blood/src/aigilbst.cpp b/source/games/blood/src/aigilbst.cpp
index e74490ac9..94b2c5f89 100644
--- a/source/games/blood/src/aigilbst.cpp
+++ b/source/games/blood/src/aigilbst.cpp
@@ -61,14 +61,12 @@ void GillBiteSeqCallback(int, DBloodActor* actor)
 {
 	if (!actor->ValidateTarget(__FUNCTION__)) return;
 	auto target = actor->GetTarget();
-	int dx = bcos(actor->int_ang());
-	int dy = bsin(actor->int_ang());
-	int dz = actor->int_pos().Z - target->int_pos().Z;
-	dx += Random3(2000);
-	dy += Random3(2000);
-	actFireVector(actor, 0, 0, dx, dy, dz, kVectorGillBite);
-	actFireVector(actor, 0, 0, dx, dy, dz, kVectorGillBite);
-	actFireVector(actor, 0, 0, dx, dy, dz, kVectorGillBite);
+	DVector3 vec(actor->spr.angle.ToVector() * 64, actor->spr.pos.Z - target->spr.pos.Z);
+	vec.X += Random3F(2000, 8);
+	vec.Y += Random3F(2000, 8);
+	actFireVector(actor, 0, 0, vec, kVectorGillBite);
+	actFireVector(actor, 0, 0, vec, kVectorGillBite);
+	actFireVector(actor, 0, 0, vec, kVectorGillBite);
 }
 
 static void gillThinkSearch(DBloodActor* actor)
@@ -293,8 +291,7 @@ static void sub_6CD74(DBloodActor* actor)
 	DUDEINFO* pDudeInfo = getDudeInfo(actor->spr.type);
 	if (!actor->ValidateTarget(__FUNCTION__)) return;
 	auto target = actor->GetTarget();
-	int z = actor->int_pos().Z + getDudeInfo(actor->spr.type)->eyeHeight;
-	int z2 = target->int_pos().Z + getDudeInfo(target->spr.type)->eyeHeight;
+
 	auto nAng = deltaangle(actor->spr.angle, actor->xspr.goalAng);
 	auto nTurnRange = pDudeInfo->TurnRange();
 	actor->spr.angle += clamp(nAng, -nTurnRange, nTurnRange);
@@ -306,14 +303,13 @@ static void sub_6CD74(DBloodActor* actor)
 	}
 	auto dvec = actor->xspr.TargetPos.XY() - actor->spr.pos.XY();
 	double nDist = dvec.Length();
-	int dz = z2 - z;
 	if (Chance(0x600) && nDist <= 0x40)
 		return;
 	AdjustVelocity(actor, ADJUSTER{
 		t1 += nAccel;
 	});
 
-	actor->set_int_bvel_z(-dz);
+	actor->vel.Z -= target->spr.pos.Z - actor->spr.pos.Z / 256.;
 }
 
 static void sub_6D03C(DBloodActor* actor)
@@ -322,8 +318,7 @@ static void sub_6D03C(DBloodActor* actor)
 	DUDEINFO* pDudeInfo = getDudeInfo(actor->spr.type);
 	if (!actor->ValidateTarget(__FUNCTION__)) return;
 	auto target = actor->GetTarget();
-	int z = actor->int_pos().Z + getDudeInfo(actor->spr.type)->eyeHeight;
-	int z2 = target->int_pos().Z + getDudeInfo(target->spr.type)->eyeHeight;
+
 	auto nAng = deltaangle(actor->spr.angle, actor->xspr.goalAng);
 	auto nTurnRange = pDudeInfo->TurnRange();
 	actor->spr.angle += clamp(nAng, -nTurnRange, nTurnRange);
@@ -335,14 +330,13 @@ static void sub_6D03C(DBloodActor* actor)
 	}
 	auto dvec = actor->xspr.TargetPos.XY() - actor->spr.pos.XY();
 	double nDist = dvec.Length();
-	int dz = (z2 - z) << 3;
 	if (Chance(0x4000) && nDist <= 0x40)
 		return;
 	AdjustVelocity(actor, ADJUSTER{
 		t1 += nAccel * 0.5;
 	});
 
-	actor->set_int_bvel_z(dz);
+	actor->vel.Z += target->spr.pos.Z - actor->spr.pos.Z / 32.;
 }
 
 END_BLD_NS