New Power window problem??

[Dover]

My AUII Wagon seems to be falling apart. My rear right Power window today gave me a new headache.

After exploring the site and the many power window problems and fixes, I think my problem is unique and I couldn't find any help.

The Switch and motor are fine. The window works up to about 1/3 of the way - it goes up and down in the bottom third with no trouble but then seizes.

I've tried separating the rubber and using lube - hasn't helped. I have pulled the interior lining off the door and sprayed inside and still have no luck. When I manually push it up to and it seems to get stuck and it takes a lot of effort to push it back down, whilst using the button to a point where the power works again.

It's almost as if one of the pulleys is getting stuck r something like that. I haven't pulled rest of the door apart to get to be able to look at them closely (Not sure how to do that!!)

Any thoughts??
I'm really stressing as everything is going wrong at once!!!

This is adding to a severe clunking noise we get when travelling over 100km, a clunky steering mechnanism(probably related - mechanics never seem to be able to pinpoint it though) and the famous LCD screen - which is currently in Melbourne for repairs.

Thanks,
Ben