We had a very successful visit to HWH. They were able to get our leveling system work again. They found that the last shop, Alliance Coach (HWH Master Service Center) in Wildwood Fl., that we visited in Nov 2013, screwed up the wiring to the raise & lowering solenoids. This also caused the control box to fail.
After getting the system working, I had them service the front and rear 6-pack manifolds.
Were in the bay at 7am and out by 11am. With 2 service techs working on the coach, the total cost was $89.35, including an extra O-ring kit.
Can not say enough nice things about them and well worth the drive.
Wow, I don't think I can get my bicycle serviced for four hours for $90. Thanks for the info.