picking up speed

[svandamme]

The screw was fine, it would not explain why the thumb safety also refused to engage.
I still think it was dirt, it happened right after that weak load , the one that bounced back undamaged from impact.

And i did find a lot of flakey powder residue on the rear underside of the slide, the area between the slide and where the hammer is pushed down..

back in one piece, all safeties work, i'm calling it a day.
Now i can focus my attention to that other noble time waster : beer !