Last October, my husband and I went to HWH for a leveling system check up on our 2004 Winnebago. We bought it used and assumed that maintenance many not have been performed on it.
We made an appointment and the rig's leveling system was thoroughly checked. One of the hydraulics was rebuilt, as it wasn't meeting standard.
Great service at a reasonable price.
Walkabout With Wheels: Hydraulics Checkup: The HWH Experience