I agree with David.
The top material on my Series 80 is slightly squishy on the top, and the squishiness reduces as it heads around the side radius that goes to the drip edge.
By the time the material reaches 1.5 to 2-inches above the drip edge, it seems to be glued directly to the top’s sheet metal.
Also, how thick is the top material, as it appears to be a bit thick?
I’ll root around for a piece of the material that’s on my top (I think that I’ve seen it somewhere in the past 5-years) and send you a small piece.
I recall that it is about the thickness of construction paper, but of course much more flexible.
I hope that this helps.