You should not leave the system in "Store" mode for more than a couple minutes because the solenoids are being held "on" and, as you noticed, they get hot and could damage the windings. Spray the rams with WD40, wipe off and then try the "store" process again. I have a shovel ready to help the lazy ones. If you have the old style springs (not tapered at the ends), then it's time to replace them.
I am hoping to stop by the HWH factory this spring and get all my jacks rebuilt - they say it takes one day and you can stay in their parking lot where they have full hook ups.
Rick and Larrie Dee
1997 40' Newmar London Aire DP CTA 8.3 (Mechanical) 325 Spartan MM
Bringing her back to her glory.
'08 Jeep GC Overland.