Almost the exact same thing happened to me on my 2017 Miramar 35.3. Turned out the factory had incorrectly mounted the motor and one of the rails. It is not pleasant, but possible to continue your trip with the slide in until you can get it checked out. Alternatively, make sure that you are holding the switch down for several seconds AFTER the slide reaches its full in or out position, so the motors synchronize. You might have something dragging, or perhaps the coach isn’t completely level. You shouldn’t run the slides out unless the jacks are down and the coach is completely level. Follow the instructions in the manual to reset any blinking LED alarm annunciations. Good luck and enjoy the rest of your trip..... and the Miramar.
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