Curious if you ever figured things out. I have a PD 31 with the large slide and had problems. Just got to put things in perspective , it's a simple operation, a big room on rollers, 2 motors, a control box on the inside, and a controller outside in a storage compartment:
https://www.granddesignrv.com/sites/...ting-Guide.pdf
http://www.lci1.com/images/support/lipsheet/0272.pdf
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