Hey Butch you're not using See thru's by any chance?.If so that's most likely where your trouble lies.I would get a steel base and decent rings.Get rid of the aluminum.It's is recommended to use a thread locker. Loc-Tite Blue #242. DO NOT USE THE Red Loc-Tite I believe it's #262.Only Loc-Tite the base screws. Don't Loc-Tite the rings themselves.Good luck getting your problem solved. Ruger Redhawk

Support the NRA...Protecting our Gun Rights and Freedoms is everybody's responsibility. Ruger Redhawk A proud NRA Life Member since 1977.