Have 1990 burb interior took apart passenger side vent with vacuum control.There is a cover that protects the vacuum control. My problem is that I need a picture of how the vacuum motor is indexed its connected to a little rod and i've tried different positions can't seem to get it right need a picture to follow please help! In my defense I took it apart about 8 years ago and when i dragged it out of the box i couldn't get it to fit.