When I had an extension on my encore it would dent the primer pretty well and sometimes even fire it, but just not enough to set it off most of the time. Soon as I removed it the problem went away and I have had 0 misfires since. If I were betting I would lay money that yours will also.
I don't know if I could trust any fix to the problem. It would always be in the back of my mind that it could happen again and while its just annoying at the range, out deer hunting it could be costly. I have just learned to live without one, get high scope rings. Dan