5210 Side Window Fix
I found this strip on amazon. It is a curved rubber piece with VRB tape.
I shaped it around the window closely but not tight. This moves the air around the glass which stopped the window rattle.
The Amazon item is "Duzzy 39 inch Water Barrier for Sink, Silicone, Water Blocking" Amazon #B094DF1WTY for $9.99
Sorry that the pics are sideways!