Sunroof- 85 Quattro 4000

[Rick Liotta]

I have an electrically operated sunroof in my car--  '85 4000 Quattro.

I have replaced the broken pieces- but the roof still does not operate 
smoothly from the "tilted up" position to the closed position and then from 
the closed position to the "slid open" position.  Lots of pulling and 
banging is required!

The pieces replaced:  guide plates- both sides.  This is the piece which has 
delicate grooves and slots in it.

Is there a better repair guide for this problem than the "Red Book" ( 
Official Factory Repair Manual by Robert Bentley)?

Thanks very much--- Rick