Hey everyone. So I've got an m4 that mostly consists of King Arms internals except for the cylinder and cylinder head. I am having some issues with it. The air nozzle is working in reverse. After each cycle of the gears the nozzle is left in the compressed position hence the gun does not feed properly. Ive taken the gun apart multiple times and have inspected the tappet plate, gear chip and cylinder head and everything seems to be in the correct position and seems to cycle correctly. One weird thing I've noticed is that right after i install the gearbox into the gun and go to take the first shots, the trigger sticks on semi auto. I then have to switch it to full auto, take a few shots, and only after i do that semi auto works, but the nozzle problem is still there. Very strange. If anybody knows what the problem could be, please help me out. It would be greatly appreciated. This is the only thing that is stopping me from getting on the field again.