Had the same thing with my slide,lift the inside rubber seal along the bottom of the dinette slide clean out any junk and make sure rollers are free. My problem was the rear corner of slide would slow or stop and start to miss align just once in awhile then got worse until I had to push while closing slide for first couple of inches then it was fine rest of way. Cleaned and just a small shot of lube on rear roller under dinette,haven't had problem since. Also try leveling manually with level on front table pole plate in floor between driver and passenger seats, I use phone app, Camper Leveler -Free Edition, lay phone on floor plate it shows front rear and side with picture, inches,and color,real time.
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