I've got a similar problem with one of my front jacks. Beside not wanting to fully retract (WD40 bandaid worked) it's making a loud groaning sound extending or retracting. Besides that both front jacks leak down in about two days. I then have to relevel. Another problem seems that our motorhome appears level, but all my outside compartment doors are misaligned when level making it VERY difficult to open them. One rear jack has been replace as well as the keypad controller board. On our previous mh that we had for ten years we never had any problems with the HWH system. But that was a manual system and this is full automatic leveling system.
I've decided that we are taking a side trip on our way to Alaska this year. We'll be spending a few days at HWH in Moscow, IA for repairs.