The windows are notorious for being finicky in regards to how the channels are set up. Even new motors,or Ted's set-up will work hard if things are not aligned correctly.
This can be an hours-long chore, so be prepared.
There is no "this-is-how-it-goes" solution, you have to remove the door panel and just start loosening things up, fiddling until you find the sweet spots.
Larry
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