Whats Going on? Need some Help. I have one of those combo Porter cable Nail guns from the depot that comes with a compressor, a finish gun, a brad, and a stapler. The Finish gun just recently started acting up. The nails don't fire. If you hold it against the wood, you hear the air but it seems really weak. Holding the trigger down and taking it off the wood the sound continues. Not the normal sound. Doesnt appear to be a jam. I even thought i saw a spark one try. It isn't the compressor or hose because the brad works perfectly. Any ideas? I need to use this tomorrow and need to find out what is going wrong really quickly. Anyone have a similar issue?