what about
http://forums.alliedmods.net/showthread.php?t=69728 + these fixes:
http://forums.alliedmods.net/showpos...6&postcount=26 http://forums.alliedmods.net/showpos...8&postcount=32 (rather check for a trigger_gravity in the map and if yes use that fix)
never had problems with it and there is just one bug left for that semiclip which is in every semiclip so far: if you try to spec a semiclipped player through hltv it looks really ugly xD dunno how to impress me but i guess it has sth to with pev_angles + roll
edit:
i just remember that i read somewhere (i think it was in hawks semiclip tutorial) that shouldcollide is called very often + it doesnt work properly for semiclip
+ i found this fix for the old semiclip method which just sets pev_solid