I just took apart my automag to fix my vertical adapter. Anyways, when I gas the automag up, I can here the air as it pressurizes, but there is no pressure behind the trigger, as if there was no gas in it. I am guessing its something with teh way my on off is put together, but not certain. The brass part of the on/off, its not like a sandwich with 4 holes in it. Instead, imagine taking off the top of it. Its hard to explain.