Jayco Melbourne Stabilizer Jacks
I went and checked the jacks out on our RV and, sure enough, if you release the parking brakes the jacks retract. I haven't had this thing very long and I'm finding out there are a number of things that don't work with the parking brake engaged. I guess I need to go to that as my first checklist item when I think something is malfunctioning. For example, the DVD player won't work unless you apply the parking brake twice and then leave it on. The RV poiice don't want us watching videos while we drive, I guess.
Thanks for the information.