Power Window problem

This just started happening today, but when I roll my driver's window up it will get stuck at the same spot every time. (about 4 or a little more inches from the top) I can pull it up a little with my hands and it will roll the rest of the way up automatically fine. I notice there seems to be more 'defined' rub marks on on the center of the window around where it gets stuck...Does anyone have an idea on how to fix this or lubericate it without having to pull the door panel off? Any suggestions would be appreciated. By the way, the window does have tint on it. Thanks.

It's really not that hard to remove the outer door panel.

And without pulling the outer door panel off - there isnt anything you can reach or lube or bend-out-of-the-way. With the inner door trim panel removed, all you get to do is look at the metal door panel that has no good sized openings in it.

Ok, thanks for the replies. I started pulling the outer door panel off yesterday evening and will try to get the whole thing off later today. Hopefully it just needs lubricated. I'll let you all know how it goes. Thanks.

::::EDIT::::

I WD'ed the gears and what not all up and that still didn't help so I just put some thicker grease inside the door frame where the window slides up and down and that seemed to help it. It now rolls up and down alright. Hopefully it keeps working... ;)