Windstop squeak
 

Any thoughts on how to eliminate the windstop from rattling / squeaking .?

Felt pads where it's rubbing.

Example: Surface Gard Assorted Light-Duty Self-Adhesive Felts 46 Pack-9425 at The Home Depot

That's what I did a few years ago. Works like a charm.
I just got self adhesive velcro strips, only used the soft portion. I put 4 1" sections at 4 different spots. It makes it a little more difficult to put windstop on and off but totally silent now.

I too applied inconspicous self adhesive velcro,shortly after buying the car. One of the tabs was missing. It really secured the inordinately expensive parts that do look great. It completely eliminated the rattles.