Hey guys: My '87 Fury has manual windows. The two front windows roll up and down fairly smoothly until the last couple of inches near the top, then they try to bind in the track. The reason they are doing that is that the window glass on each side has excessively fore and aft movement...you can grab the top of the glass and move it back and forth easily. I've been into mopar window regulators before on A-bodies, but I've been reading around on here that these (of course) are not easily repaired. Any idea of what's broken or worn out in there before I dig into it? I prefer not to take it apart and then have to leave it that way while looking for some part that doesn't exist or something. Thanks.