Hello all
I'm getting started on fitting a barrel and it needs a pretty good shim (.009). However, this is on top of a shim that already existed. Looks like it was put on with the JB weld method in out stickies. When I shim up with a non-permenant shim to check the tightness with the feeler guage it locks up tight with no play side-to-side, or up and down and "grabs" the feeler guage as specified in the barrel fitting FAQ. Here's my question, remove the old shim, or not and stack one on top? As always, thanks for your time!
