[rheavn]

Funny how the fittings on the left side dump valves are metal.  

I took off the bad fitting and the thread is a M5-0.8.  Went to my bag of tricks and I just happened to have two with that thread.  Installed two straight fittings, new air lines and all leaks in the right dump valve are gone.  One more circuit leak free.  More testing tomorrow.

I replaced the plastic 90 degree fittings with straight metal ones.  I had to make the air lines longer.  I don't like the push in fittings, but I haven't found these in a compression fitting.