Parts Guy,

I assume you are with Prevost so you have access to substitutions and pieces and parts not found in our parts books. So far, to the best of my knowledge Joe is the only guy in POG that has a coach with those valves. If you want to really have a good impact on POG folks, outline the changes required to stop the older coaches from dumping tag axle air when the aux pressure drops below a certain value. There are several on this forum that would likely spring for the fix.