could you explain your problem more clearly, cuz i do not really understand what you are saying. If you have replaced the form 2 model by a form 4 model it should work except if it the model is made for the normal hnalflife or dmz or esf alpha versions cuz then it is way to big. and ingame it will be the same thing, esf beta has 4 times smaller models then halflife has so if you load in a big model from say dmz it can chrash i guess...maybe that s the prob...