Pam & Bruce,

I have the HWH in my CC and had 3 or 4 earlier plastic coaches with the HWH. With the Prevost, there just isn't enough volume in the Aux Air Pump to do much good when the system tries to maintain level after you shut down the engine. The bus is so heavy, I think the aux air pump would run all day and never bring up a bag or two. I use it to auto-level the bus at high idle and then shut it off after killing the engine.

Also, on mine, the Prevost level low does the same function manually and I can't get the HWH to raise any portion of the bus further. In my opinion, it's just an auto-level and that's it.

Others with different converters may have different experiences...