After replacing the stock cylinder, cylinder head, and air nozzle with SHS and Lonex parts as well as re-shimming and re-lubing the gearbox I have been having issues. After a cycle on semi-auto i noticed the air nozzle remains retracted into the gearbox slightly. Correct me if im wrong but i believe this is due to the internals continuing to move freely for too long after the cut-off lever has been engaged. I have no clue how to correct this besides maybe putting in a stronger spring and this problem is causing plenty of double feeds. Any ideas?