Interestingly enough i found this text in at least 4 points in Morning Prides catalog.
"Similarly, customers are cautioned that Arashield reinforcements can be a heat sink under certain
conditions and are not recommended."
They mention it by cuff reinforcements, elbow reinforcements and by knee pads.
On the Bi-Flex heat channel knees they mention that instead of going all one material you can mix it up. "An
example of such a knee would be, say Arashield in the center for durability and non-arashield on the sides for
easier flexing."
Which would prob eliminate some of the issues you guys mentioned that you are having, or the annoyance aspect.