Carrion Swarm - Need expert help!

You might have played the map "Elimination" made by me on B.net.

In the map, you fire modified carrion swarms and try to take out eachother. The carrion swarms have very low splash (can be anything between 60-120 depending on weapon) and the damaged effect looks like blood stains.

Some ppl have whispered about some weird problem with the attack, where the shot HITS the enemy (meaning, blood stain effects) but no damage. And some times in some angles you can fire a shot that really looks like it shud hit but it doesnt. And then u move just alittle to the side and shoot beside him, and it can hit. Its really weird.

So what i need is some more info on the Carrion Swarm, how it works (area of effect vs collision size) and why there some times come effect but not damage. My guess is that the effect come when the AoE hits collision size but NOT center of unit, and damage comes when the AoE hits center of unit.

I dont have any idea and neither does anyone here @ forums, as u can clearly see :P. My suggestion is that you just try it out, make a tryout map with units that have a custom carrion swarm. make a trigger so it leaves a message when u hit something with it, then just try 2 find a spot where it doesnt hit him, if u can find a spot then just figure out why it didnt do damage.

Hope u can fix it cuz it was damn annoying while playing ;)

I guess its a periodic that checks if the unit is in range of the carrion swarm. If the missile is very diagonal there may be a little chance that the "splash"-area doesn't hit. About blood but no damage: I think that has with something else to do...another bug. But remember this is just guesses.