I have a Diana Chaser in .22 with the rifle kit. I really like it. About three weeks ago I was shoot, got so involved in the shooting, put a pellet in backwards. Two things happened. 1.) the O ring seal between the breach and the barrel needed to be replaced, and now the cartridge only lasts about 2 days in storage. Whats the fix. There is a you tube about fixing the problem on a crosman 1077 https://www.youtube.com/watch?v=BRRaBy47FGw. Anyone know if the guns are close enough that I should try it with the chaser.