Gentlemen, I need your help, yet again. I have about 400 rds. of Wolf 62 gr. FMJ (black box) ammo. I tried shooting it in my WASR 3. I had a gunsmith replace the springs on the extractor. It was a jam-o-matic, but now shoots fine (weak double coil extractor spring). Well, it shoots REM UMC 55 gr. non-stop, without any issues, but after about 60 rds. of Wolf 62 gr. FMJ (black box) ammo, I experience nothing but FTE's after every round! A guy at the range today said something about adjusting the gas block/port?? Any clue as to what he was talking about or what I should do? Thanks.