This has been a problem with QAD rests on faster bow. The launcher does not always get out of the way in time. I had a MQ1 at about 280 fps and had no problems went to a bowtech allegiance at 305 and had a problem. You will need to set the spring pressure up on the rest. If you doa search on the web for QAD rests and give them a call they will fax, email, send you instructions on how to fix it. It is hard for me to tell you how to do it and don't have the instructions to post, but it is not a hard problem to fix.

Good Luck
Jeremy