im not very experienced either, but i think you should look in opensa to see if it has the offset and go to that offset in the hex
The problem is that even in open SA I can't find the right collision...
And I have a bigger problem atm... My multiplayer pause is glitching... After i pause and try to get out of it it keeps pausing again... In other modes it never does this.. only on multiplayer... its weird how this glitch started because I didn't change anything on my SD card o.o;