I'm glad you got the screws out. I'd follow the above suggestion testing the acetone on the bottom of the rings. I've used blue lock-tite on at least 50 scopes over the years. I only put a small amount on the tip of the screws and never had a problem with it. As others have said get a good torque wrench (Borka) with a quality set of bits, Allen, Slot and Torx for mount or dismounting your scopes. One of the best investment you can make. I never torque my rings with more than 20" lbs.