I have a Parker Hale Supreme sporter, No 1 Mk 3, which has a safety that is very stiff to move, almost to the point of tearing your thumb. I took it apart, have lubed it, but with no real improvement. If I tighten the screw down, then back it off a bit, maybe a 1/3 turn, it moves much easier, but I am hesitant to leave it there as I suspect it would rattle loose. I am wondering if putting a brass shim under the external spring part where the screw goes through might help, or if anyone might have some advice on this.


















































