We just went to the HWH service center in Moscow, IA yesterday for a leveler issue. We had an intermittent issue with one jack not coming down at all and then other times the same jack would declare “excess slope” when it wasn’t too extended. HWH is a nice company to deal with, and their phone support was good. However we live just about 3 hours away so decided to let them do the work. In our case, it was a failed pressure sensor. Summary is that your problem is probably not at all our problem, but call HWH and ask them for recommendations. Good folks.