1965 Convertible Rear Quarter Window Adjustment

@65dartcharger - Thanks for the pictures! I was curious how much play that regulator has at the pivot point? How much play between the two pieces that make up the front of window lift arm? I was wondering if the play in that pivot point is normal and if so how much.

Appreciate all of your help!
I checked tonight. It's very tight and not much plat. Would it be possible to press the center rivet a little bit more?