I had the old style winch motor which had the same symptoms as described by the OP - it was replaced with the P5500 motor and I had no issues (though the P5500 motor was very loud) - I have since moved on to a Hybrid trailer, so no longer have the popup.
have not heard of the P5500 motor having this problem. Maybe you should talk to Carefree, the manufacturer.
HTT: "EscapeII" 2016 Shamrock 23WS (current)
PUP: "Escape" 2010 Rockwood HW 277 (gone)
TV: "Bruce" 2011 Dodge Durango V8 Hemi Crew
Just us gals (me, Sis and our daughters)
We spend alot of money to go sit in the woods