95 s14 window problem...

[turtle m3th]

Alright, I've read a few of the threads pertaining to s14 window issues, but I haven't come across one that is specific to my issue, so I'm asking for your guys help. Ok, So the window used to go down, but it seemed a bit off and twitchy. like the track was messed up or something. And them when I go to roll it up it gets stuck at about 1/3 of the way up and just makes this grinding noise and again at about 2/3. Also I have to pull the window by hand to get them past these sticky spots. tried to diagnose the issue today and removed everything from the door that pertains to the window. After inspecting the motor and regulator everything seemed fine, so i put it back in without the window. everything worked fine and smooth. Then i put the glass back in and the problem showed up again. Kept fucking with it to find the issue and the window just stopped working all together and now it's stuck half way up.... any ideas guys? Thanks for your time.

-David M.