Piston weight 18.7g
I also have already discovered the SHS tappet plate PME haha, hence the guarder I am currently using. Nozzle is lubed, I think it may be a vacuum issue as well, is there a way to know for sure if it's PME or vacuum? What did you use to enlarge the holes on the piston head? (No AB used ever, the slight overspin makes perfect precock haha)
FPS is consistent with ROF control lvl 2, practically no loss in full auto compared to semi at ~42rps. ROF control lvl 1 puts me at nearly 46 rps, but I get ~20fps loss. ROF control OFF gives me 48-49rps but fps drops all the way to ~300.
Anything look off in the gearbox? Seems like theres some wear on the rails where the piston rides, yet it slides freely without cylinder up and down in shut GB. Anyway to fix this? Sand GB? Sand piston rails on piston?
I also believe I have a slight nozzle to cylinder head leak. How should I go about fixing it? I tried to stretch the nozzle o-ring and still seems the same. Should I just switch to Maxx cylinder head? It seems to fit great with the Maxx nozzle. Just opened a friend's GB with Maxx cylinder head/nozzle combo and seemed solid.
Nozzle seems to sit slightly lower in the tappet plate, it's ~1mm "unseated," is this normal?
Also cleaned, re-shimmed and re-greased gears after pics were taken, same result. Used Molykote33 on gears, tappet plate, and piston rails. Used superlube on piston-head o-ring, and nozzle/cylinder head.