My car is a 1995 GTS, with power locks/windows. The passenger window, when I hit the switch, goes down smoothly, but going up it'll get about halfway then have go real shaky, or just not go up anymore at all. It started happening yesterday morning, and it's continued doing it today. I heard something about the rollers in the windows not working right, since the motors are fine. In fact, when the window goes all the way down, if I keep the switch depressed it'll make a clunking noise as if the motor keeps going but the window is all the way down. Any help would be appreciated, thanks!