Hey all, I have an issue with my ICS AK (again). Basically, every other shot drops fifty feet from the muzzle (as if their is not enough hop-up, but worse), the other shots don't even leave the barrel (as if their is way too much hop-up), and every fifth or so shot shoots perfectly. I have tried various hop-up packings and nubs, including custom flat-hopping, Maple Leaf hop-up MR 50, and stock ICS, but nothing changes the performance. I have popped the gearbox open, and can't see any issue. The piston head I am running is a Maxx aluminum one, double O-ringed. At first I thought the air seal was inconsistent due to the piston head, but couldn't repeat the problem. In addition to the range and accuracy variances, the FPS seems to jump around dramatically. It also sounds like the air nozzle is stopping in a different spot after every shot, and therefore the length of time it takes to cycle changes. Any advice would be greatly appreciated. Thanks in advance, OA.