Srry guys for the late response, am quite busy at the moment.
So momentarily there are 2 systems working :
1) the one with TSP connecting every few minutes
2) the one where the server sends data to us

In the first system all the weapons that are different from the ones in standard ET are counted as a heavy weapon, so no headshots are considered.
The second system does count the weapons as a light weapon with headshots and so forth.

I hope that made it clear

When I'm back both systems will be merged and perhaps special rules will be applied for the different weapons, that isn't decided yet.