I'm trying feverishly to get the Riviera back together, and have hit a major road block: The Power Windows. Basically here is my problem: There is too much "play" in the regulators to properly adjust them. I cen set it so the whole window is within a 1/4 of an inch front to back. Basically the back goes up about an 1/8th of an inch to far and there is a gap at the front. Not a big deal but he window can be puched into place using the "play" in the worn out regulator. Is there anyway to refurb it or get a new one? The second problem is the the rear quarter window. The window regulator follows a "track" with a plastic wheel sitting in that track, My plastic wheel is broken, and the window will fall out of the track, any ideas' if I can scavange a rear quarter window reg off of something else, or even get the wheel of of some other car?