I am new to using electric valves (dont laugh), and I have eight 3/8" SMC's on my truck. I tried to use them for the first time tonight with the compressors and tank hooked up and they are all leaking air into the bags from the tanks. I took one apart and cleaned it, but they all seem to be doing it spiratically (sp?) and at any given time. Any help would be appreciated, I am very anxious to drive it.