I would remove some bedding under the bottom of the recoil lug. Just enough to have clearance. A small chisel or even a screw driver used as a scraper would be enough. This in addition to the other checks.

"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli