[Tfrazier]

Hey all, 
This may or may not be a big deal. Yesterday I went to take my coach out for its weekly drive. When I started her up, I notice that the break air gauge had a different reading than the supply air gauge. This has never happened. They always read the same and climb at the same rate after I start the engine. the break air gauge was showing about 80 psi the supply gauge was at 0.

I went out and walked around the coach. Everything looked normal and for being parked for a week, the body height was about where it always is after this amount of time. I took my tire covers off and went back inside. To my relief both gauges showed the same reading at 110 psi and everything was fine. Took it out for a 30 minute drive. Everything felt fine and drove/handled as expected.

Fast forward to today. Went back to coach to do a follow up on the gauges. Same thing. The break gauge was at 100, the supply gauge showed 0. Again, did my walk around and it was sitting up just fine. I started the coach. It took about 1 minute and the supply gauge caught up to the break gauge.

any ideas? Should I be concerned?

Thanks, Tony