Sounds slightly familiar. My front motor does stop like yours. I press Extend briefly to get slide moving out, pause, then retract all the way in.
That usually works for me. Kinda like swinging a bucket of water back to gather momentum forward.
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2015 Thor ACE 29.3 (Traded in)
w/'15 Jeep Wrangler Unlimited toad
2019 Fleetwood Southwind 37F
2019 Ford Ranger Lariat toad
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