After shooting my 80 cm. air ballet, I have found one very disturbing problem that has cost me a recent tournament. First let me say the gun is the most comfortable,accurate and powerful out of the box pneumatic I have shot. I shoot alot of freshwater tournaments and will shoot my gun over 200 times in some tourneys. I have noticed that the shafts slide gets stuck on the butt end of the shaft after about 50 shots. If you look at the end of the slide it is slightly cone shaped and eventually gets wedged on so you have to hammer it off. Being in a hurry I ground the cone part off to the flat and it held thru one tourney. I do have a question for the pros out there though. Does anybody know where I can get a riffe type slide ring for a 6.5mm shaft. All my other pneumatics have been converted over to these for streamline purposes and they have held up great. Also, at the end of the most recent tournament i noticed alot of air bubbles coming out of the front of the gun, Is there an oring in the front that went out?