H
HavBlue
Shock Rebound Tear --
Feel The Track! Tire unusual markings and wear patterns
If you look closely at the tire pictures (3rd from left) you'll notice it looks scaled (among other things)...this is what I'm talking about.
That third picture is what I experienced last summer after the long run at high temps and speeds. I haven't experienced it since but I now run 3psi more in the rear too. We'll see what happens this summer....
For the type of riding you do I am surprised you haven't gone to a piggyback with dual adjustments.