Looking for some advice for a buddy. He has an older 110 savage where the front of the receiver is round and the back of the receiver is flat. He got the one piece lightweight talley rings with the integrated base. Everything was looking pretty good after mounting the talleys on the gun until we put the alignment bars in the rings. It appears the front ring is about .002" higher than the rear ring. We are looking for a practical solution. Is moving that much metal with lapping bars practical or advisable? Would adding a shim between the rear base and the receiver be a better idea? I hear about folks bedding their bases but I don't know anything about that. I'm sure there are plenty of folks on here with tons of experience. Any advice would be greatly appreciated. We'd sure like to get it right the first time! Many thanks and good luck in the draws!!!