I have an 11 FCNS in .260 w/ the accutrigger and accustock (only 2 action screws). The barrel looks to be off center in the barrel channel and the action moves in the stock. The rear screw is loose and the front one is tight. The rifle is very new (less than 100 rounds down the tube) and I've never touched these screws before. I tried to "snug up the rear screw and it's stripped! Any ideas? Does the rear screw thread into the aluminum bedding or just into plastic? I really don't want to send the rifle back to Savage.