My passenger window on my 65 coupe all of the sudden decided to stop going down past 1/3 of the way. I've tried researching how to trouble shoot or remove it and am having some trouble. It has no problem going up and down, for that 1/3 of movement from closed. My knowledge of these sucks to say the least. I did try going in and feeling for the felt on the most forward tract, which was pretty crumbly. Im thinking it possibly is jammed in the track? If someone can point me towards a link with some pointers or anything I can check/adjust that would be great. its driving me nuts!