Window hassle

[TomReyno]

Hello to all. 

2 windows are giving me some grief, passenger window goes down but wont go up. Mechanism makes noise but wont go up, and I can physically push it up. I took the door apart to investigate. So I'm not too sure what is or could be broken there? 

Drivers side, this is weird. Was working fine, then the other day I tried to send it up - it went up then stopped, went back down - then I tried and it moved slightly upward, then back down. Any ideas why that window is irritating me?! 

As always, thank you for any help! 

[Audi Owners Club.]

Just a thought but it sounds like an obstruction in the runner and as it hits resistance it then backs off ?