Al76slc asked :
"The upper allen bolt behind the chrome panel above the door lock" was loose - adjusted and tightened it and lo and behold no more noisy crack and the window closes correctly into the groove in the door seal.
Could someone explain this, or better yet, enclose a photo? Where are we working - door jamb, inside door, or inside door panel?"
The area where I adjusted and tightened the allen boolts was on the end of the door between the outer skin and the inner trim,
One allen bolt is under the chrome trim plate (held on with 3 small chrome headed crosshead screws) situated at the top of the door edge.
This was loose on my case and tightening it solved the problem. This is one of the two adjusters for the window angle.
The other allen bolt is hidden behind an oval plastic cover (prise it out with your finger nails (or a plastic kitchen bowl scraper) NOT a screwdriver as metal will scratch the paintwork). This cover is about 3 inches from the bottom of the edge of the door close to the outer skin (Not the round cover a bit higher - ignore this one)
This allen bolt adjusts the rake of the window - I found it best to adjust this with the window nearly at the top - definitely NOT with the window at the bottom.
NOW have a picture (click on the link)
http://uk.pg.photos.yahoo.com/ph/jim.coley@btinternet.com/detail?.dir=5661&.dnm=89e2re2.jpg&.src=ph
(easier that way)
Cheers
Jim