When replacing the window rollers, What are you using to roll the studs over to secure them to the mechanism? They are way too big for any rivet set that I have.
I found a way to do this that worked very well and looks good also. Assemble the rivet and roller then use a vise and line up the ball of a small ball peen hammer and squeeze until it starts to roll the rivet over. Finish by hammering flat.