Sage advice from Tok, it's happened to a lot of us. Takes 5 minutes to fix, use low or medium strength loctite and not the red stuff. Also if you field strip it make sure you line up the bushing correctly and it does not have to be super tight, just seat it and then back off to the first notch. I think CZ supplying a wrench is a little misleading and people think they need to crank down on the bushing, don't do that and you'll be good.