I just bought a new G3 about a month ago. I was playing with it for only the second time this past weekend and i had some major leaking problems through the bolt. On four seperate occasions, air would start rushing out of the bolt, and everytime I would change the o rings in the bolt and i could get it fixed for a little while then it would do it again a little worse the next time. The guy at the field told me it was a bad reg. Any ideas?