Happy Holidays!
I didnt trust the china workers, i re-loctited mine from the moment i got the frame.
The screws that came with my 256 frame(drop out, bottom hatch,...) are crap too, and they are rusting already.I have in my todo list to change them.For now, I try to insure the hex/torx key is well placed, and clean the hole, before tightening.