Hey all, I have owned a combat machine for two months now and it just started having problems I added an r hop about a week ago and it works good but now when I shoot sometimes they will roll out the barrel, go perfectly, or come out and sink right away. I know it's not a hop up problem because there is no grease in the barrel or bucking and I cleaned out the nozzle. The nozzle is fine and still works but it's not shooting good at all. Any one know what's up with my gun?i forgot to mention that sometimes the gun won't shoot at all and then next time I press the trigger 3 bullets come out.