I didn't like the way ours operated. I think the problem was actually caused by turning the battery off between trips. Dropped the cover, unplugged the motor, taped the bare connector. Then put two 5/16" lock washers (not for locking, just as spacers) under the knob. Tightened the knob screw. The vent and I get along much better now.
If God's Your Co-Pilot Move Over, jd
2003 Jayco Escapade 31A on 2002 Ford E450 V10 4R100 218" WB