Winniebago Aspect leveling jack won't stay down

hwh jacks are self bleeding. no air in lines. if you have as joystick system, the valve for that jack is stuck open. the plunger and guide kit is available from hwh
if you have a push button system, the solenoid for that jack is open. did someone work on your system recently? if so, check the valve for that jack. it may have been left open. if not, it is stuck open. it needs to be replaced. if you need further help, call me at 602-549-3638. i do work for hwh. i live in arizona.
i do not sell parts or offer repair services on this site. i only offer help with diagnostics.

After a few days extended, my right rear would creep back up about an inch a day. HWH replaced the retract plunger & guide controlling the right rear.
Believe this part is located in unit under the Joy-stick control and not on the jack assembly.

Sounds as if the hydralic line is not holding pressure and the up spring is what is pulling it up. You probably need to either go to a shop and have it checked fixed or maybe there is some air in the line and thats why it pulls up from the spring pressure. May need to bleed the line for air. Check you manual on bleeding the jack.