My coach is on the levelers 350+ days a year for months at a time .
Winter storage levelers down ; BUT ; be aware that the shafts will get dirty and you'll want to clean them before retracting .
I always clean mine if they've been down for more than a week , or if there's been a hard rain or blowing dust.
Don't know if your levelers are HWH , but here's cleaning info that I got for my levelers.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.