I have a Remington 700 7RM andthe magazine spring keeps popping up into the chamber (to where it will prevent the bolt from closing). It is really tight and I have to finagle it to get it pushed back down to it's rightful position. Once I get it down, I have to load the bullet by hand and hold down the spring while closin the bolt. When I eject the spring pops right back up again. I didn't have this problem until I changed stocks. The factory walnut stock did not cause this problem. Any ideas?