I have discovered, a cheap (incredibly!) yet very effective fix for this issue
Basically the glass mount pops off the runners, so the glass goes up at an angle, which stresses the motor.
The fix is as follows....
Get a headboard mount washer:
And a tap washer
And a screw:
...i cant find an appropriately sized picture!!
Take all the doorcard, door lining, and window guide out (all in the haynes manual!)
Basically, you get the broken mount, put it on the window guide as it should go.
You then put the headboard mount over it, and push the hole over the mount center. You then put a tap washer in between, and a nice wide screw in to hole it all tight.
Tighten it up and voila your window is fixed for about 50p!
As for the motor, take the top cover off, and smother it in white grease - this will stop it seizing. Also take the metal plate out the motor, and also smother this in grease:)
At the end you have a good as new electric window!!