i got the part and successfully replaced it. the pistol now works ok.
however, another issue came up: trigger weight.
after i got the pistol in february, i tested the trigger weight with a homemade 500g weight and it was ok.
after some time i tested it again and it was a little off. i screwed in screw 3 a little bit and it was ok.
now i tested it and it was off again. i had to screw in quite a bit to get it not to fire at 500g. second stage now it a bit heavy.
is this normal? or i have (another) problem with the pistol?