I have a '92 SVX with sunroof that slides open but not quite closed. Stays open about 1.5 inch. If i hold the button down I still hear motor turning. I cleaned tracks with WD 40, paper towels and cotton swabs doesn't move any further. Also lubricated linkage at back of sunroof. When it comes to a stop its a definite stop. Feeling the panel as it closes the stop seems to be on front driver corner. Any suggestions? Diagrams of this mechanism?

I had the same problem.  Had to hand-assist the sunroof closed.   If you have an air compressor and nozzle, that helps clean the tracks.    I used Liquid Wrench for lube.   It works great now.

Thanks RD.