Maybe I was wrong to do so, but I have been storing it loaded and pumped on safe. I was told these guns last longer stored pumped. Worked flawlessly for two weeks, shooting it daily. Then one time it wouldn't fire. Managed to re-cock it, get pellet out, dry fired to release air. Worked fine another two days then no fire, but this time bolt totally jammed, and can't fire, nor get bolt open enough to get the pellet out. So now its not just broken, but also a potential hazard. Pump still works but thats it. Pumping more air in no good. Any ideas how to un-jam this safely?