Haven't been on here in awhile, but just finishing up my 78' Monte Carlo. The power window on the passenger side rolls down very fast and goes up a lot slower, to the point where it won't go up the last 1 inch or so. If you open the door it goes up all the way. So that has me thinking the new door seals may have something to do with it, but it's got to be more than that. The driver side works fine. Any suggestions?