Well I'm guessing that you have either of these mounting brackets. And next is what type of body are you using hard body or lexen? Basically your using a bit of foam between the bracket and the body, which gives you a little movement. I use a slow drying apoxy and leave it over night to dry,it gives you plenty of time to get your body sitting right. With the lexen body's don't glue strait to paint use double sided tape or normal tape and glue to the tape. Set up body as usual ,set the mounting brackets out a touch wider than the body and once dry adjust back to normal.