Thanks for the replies, guys. Actually, the power ring is adequately spaced from the rear mounting ring and is in the same place that it was mounted prior to removal. It was shot in that position for 3 years with no problems.
The scope was removed only because all of the guns metal was professionally recoated with KG GunCote, including the rings and bases. I have had this done to several other guns with no problems, but could the ring coating be playing a factor?
Smoky