[rvguy]

The first one is your level sensor, it tells the HWH system when the coach is level. Don't adjust it without understanding how it works. There is no air going through this. It is only an electrical sensor. Your leaning problem is probably somewhere else. Did you buy a solenoid rebuild kit from Tom?
Not sure why you have 2 30 amp buddy plugs, most Newells have 1 50 amp buddy plug. But no 2 Newells are alike. Maybe the original owner specified that? Or a previous owner changed it to work better for his situation?

Yes sir I did buy the rebuild kits from Tom. Everything has been working pretty well except I have noticed the left side is not raising as fast as the right, so I get a lean for a bit then it settles itself out. We had replaced all leveling valves a few months age and had the exact same air pressure at the supply line. And also thank you for that info on the hwh system electrical leveling sensor,. I researched it and see it has nothing to do with air system only manual leveling.

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As always thank you guys again for all the help. !!