Lee--
I think the slide has to go all the way out,
and hit a switch contact before it'll retract.
There may be something you could do at the slide controller itself, to get it to reverse
in place ie.--swap wires, hit a reset switch,
something. You need to know that many Newmar
Owners, who have visited the Plant in Indiana,
have been amazed to see the workers there moving
the Coaches around, with the slides out.
On edit: Brought Coach home from storage today.
First thing I did, was to fool with the slides.
Yep--one push, out she goes, push #2, she stops,
push #3 she goes back in...so there you have it.