I'm tightening up an M1icon. So, I glued the gas cylinder to the barrel in order to take out the play. When I put on the Gas Cylinder Lock, it clocked to about Noon before it was tight. Loosening back to 6:00 leaves a gap of ~.015".

What's are some ways for a shade-tree like me to deal with this?

I like methods that aren't permanent, like glue.
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