I finally managed to get my system up and running again. I bought a SMT air compressor for a couple hundred. After issues (and a couple of emails to the distributor) I realized there wasn't a check valve on the pump. After a drive up to Granger (they did't have what I needed), I searched online for an inline check valve. I put it line and promptly snapped off a brass elbow. Long story short, I finally had everything I needed, managed to install everything without breaking anything and it all seems to work. The compressor is not as quiet as my Jun-Air, but not too bad. I was able to get through to the US Jun-Air folks. The repair kit for a M6 is a little less than $1400. He said he could sell me a new compressor for the same price. We'll see how long this Chinese pump will last.
David and Teresa Brown
1999 Coach 513