Yesterday I was playing and on my 2nd game when I would fire my gun it would fire and then instead of recocking it would make that loud sputtering noise as if I was running out of air and not recock but I checked my tank and I still had a lil over 2k psi then i would just recock it and shoot and it would do it again. It's basically stock with an upgraded bolt but unsure as to what brand. basic mechanical. not an egrip. O-rings seem to be in good condition. could it be my bolt or my sear? maybe my sear spring? One thing i noticed is that when I try to cock it it seems as though the bolt is really snug inside of the power tube. It's lubed up good. I'm guessing when I shoot it goes to recock and the extra snugness from the power tube is making it a bit harder to cock itself. Maybe I didn't lube it well enough and it dried out after the first game? any thoughts guys?