Bigblock, ya those things do seem to wiggle around and come loose don't they, i donknow, transport,temp swings,,but I always check and not presume it's where I left it.
DennyR, I use a 2" x 4" 1/4" thick fine india stone (oiled) for polishing, that way I'm sure too not tip the pieces and/or round any of the edges. Ya hafta be carefull with the tumbler and sear pivot points, But polishing especially those Trad/CVA lock parts and the plate itself really helps alot! It's good to know T/C will honor a polished/messed with lock. I have one second hand that is just plain wore out and needs factory parts, I can't help it any more. The fly and it's hole in the tumbler,,the sear,, is just too far gone to salvage.