Finally got around to doing my drivers side window which has been stuck since last summer....
These are a pig to get to if the window is stuck up, this is the shape 10mm spanner you need to get on the hidden window clamps as no room for socket and nut is recessed :
Get to it like this:
Battery died so repair done with no pics...
Nicked this one off here to show broken part, the red plastic part with spring had broken allowing cable to pass thru it, fixed with gorilla glue and zip tie. Greased everything up while in the drive mechanism.
getting cable back on drum was tricky so unhooked from the rollers at the channel ends to give enough slack, then hooked cable back over those when motor all back together.