I have been trying to track down my leak on my ion and what is causing it... it seems like it is coming out of the rear banjo fitting that is on the doughnut... some people say that this fitting should have 0 pressure going to it until the gun is fired, and that this means my solenoid is bad. Other people say it could be the hose or fitting it self. I just need to know that with air hooked up, and the gun off with no battery should there be any air running to the rear banjo fitting. I would hate to buy a noid or new board when all i needed was a simple o ring or hose! thanks in advanced!