New rings or same set - Leupold RM Rimfire No Tap Rings

I purchased the same set of rings previously. I got a refund and store credit. I used the credit to purchase this set. These however; had the same exact issue. They appeared to be new but when I screwed the base closed it wouldn’t clamp on one of the rings. So, then I thought they sent back the same set. The screws were pre-threaded like the last set so I attempted to tighten them down. Either too much loctite or the base is not completely threaded. Same as the previous set. Instead of trying “third times a charm” I ground off about three and a half threads with the dremel. Now it clamps perfectly. I didn’t try threading the other screw to see if it would clamp because I didn’t want to mess up the loctite.