I'm kinda surprised that the door opener doesn't have a set screw/adjuster for "opening torque" - you should just be able to set that down a bit and prevent the binding that you are seeing.

If this is the same as the other thread - is there another person that operates this door ? might there someday be confusion/annoyance when one guy turns the power off to the door and the other wants to get in ? (I could be reading your posts wrong...)
-John

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2009 Kia Sedona
2009 Honda Odyssey EX-L
12006 Jetta Pumpe Duse
(insert Mercedes here)

Husband, Father, sometimes friend =)