Hello, I just bought a used snap on YA212A. It leaks gas, I'm not sure of the name but I'd believe it to be a solenoid, that opens when you pull the trigger, Its the first thing the hose from regulator goes into. I've been through snap on's web site and cannot find it. So any help would be greatly appreciated!!!! Correct name of part? where it might be located? Price? Thanks for any help!!