Hey guys, need a little help here. Not quite sure what's wrong. I have an M4 and I was putting in a new cylinder head and air nozzle. Everything seemed to go back together just fine, no problems at all, sounds normal, looks normal, the air nozzle moves back and forth on shots, It's all good. Then shooting, the first shot of the mag shoots normal. Then it skips a few and then will shoot another normally. Did a little investigating and I think it's an air nozzle problem because after a shot, the air nozzle is sticking about halfway into the hop up system feeding tube (I can see it through where the mag feeds). I'm really not sure what to do. The gearbox looks fine, the tappet plate looks normal to me I guess, it could be something with that, but it seems normal. I'm just not sure what it is, and I've been fiddling around with it for a while now, and I'm out of ideas. Any help would be appreciated, thanks.