I'm attempting to install power windows into my 88 Formula. I went with an after-market style winder that attaches to and turns the original crank stub. The installation on the driver's side works fine, but I'm having difficulty with the passenger side. The window powers down fine, but hangs up when raising about half-way up. If I remove the power winder and crank the window by hand, I can feel a slight binding (?) about halfway up. That's not a problem with manual windows, but the power motors don't seem to have enough torque to power past that. If I rock the switch up and down, I can get it almost all the way up.
How do I adjust the window so it is "looser" and has less resistance when being raised?