Fellahs my charging handles keep coming off. I have the aftermarket MKS handles mount on top of the OEM. The screws are torqued more than I am willing to torque them. When rack the handle back a few times whichever handle I am not using to charge flys off. I know I am missing something stupid here. Please fill me in. By the way when I say handle I mean the whole assembly both MKS and OEM come off.