I had an older Manners stock I got from a friend and it had full rotation qd cups that I changed myself and it came out really nice. First I found a drill bit that fit the inside of the qd cup snug. Then I take the drill bit out of the cup and heat the bit up with a torch, get it hot and put it in the cup. With the hot bit held with vice grips let it sits for a couple of seconds the epoxy melts and the cup should come right out no problem. Then epoxy in the non rotational cups.