I was helping a buddy do the once-over on his new jm8 blaster (green o ring, brass jm8/9 cylinder head and nozzle), so we actually have compression in the cylinder now. But there is a brand new problem in that he can fire 4-5 shots before the blaster jams up and he has to cycle the mag to clear the jam. He’s running gold milky’s through a fighting bros tight bore barrel and it’s a 1.25 spring if that has any effect on it.
My theory is that the nozzle isn’t retracting far enough, but I’m not certain how to fix that except for a sector delay.
Who’s had a similar problem, and how’d you fix it?