An update for you all:
After the parts turned up yesterday (new motor and replacement switch) I headed over to my sister's place and enlisted the help of her bloke to get the door back together again with the new motor in place. Swapped the motors over, got the mechanism back in the door and then tested it with... success! The window goes up and down fine, no problem. We got to work replacing the other parts and the trim, tidied up and called an end to a successful job
Today, I've had the window up and down maybe half-a-dozen times on various trips around the town, and tonight on arriving home, the window, which at this time was down (all the way), wouldn't rise again. On further investigation, the rubber trim on the inside of the window had gotten pulled down with the window as it dropped and was stopping the window from rising again. So I dug my leatherman tool out of the glovebox and used a blunt-edged file (so as not to scratch or damage the glass) to hook the trim back up into place, and hey presto the window rises again when the switch is operated.
BUT...
It got about 2/3rds of the way and started struggling again
Might have to strip the door down again and take another look. The cables and pulleys are all looking fine, and everything was greased up during last night's re-assembly job so I'm a bit stuck as to what is going on. The plastic clips holding the window to the regulator are A-OK by the way, no signs of any damage to them.
I might strip the door as far as getting all the trim off, before taking it to VW (with the regulator and window in place) and getting them to have a look - the idea being if I strip the door before going in, it will save me labour charges...
Thoughts?
Cheers