I'm familiar with HWH jacks and not Powergear. If they are hydraulic, it may be due to cooling of the fluid. With my previous coach with HWH hydraulic jacks, it was not uncommon to have to adjust (tighten) the jacks on one side after sitting for a day or two. Fluid is warm when you put jacks down, cools off and jacks loosen a bit.
'07 Country Coach Allure 470 Siskiyou Summit #31578, Cummins ISL 425; 2014 Ford F150 toad; Air Force One Toad Brake.
Glen Allen, VA; Smith Mountain Lake, VA.