Thanks for the info, I think up to 450° is okay for decent amounts of time. When I called Horizon they told me to basically cut out the whole front windshield. I also removed extra body material around tuned pipe, and around carb needles so I had room to comfortably adjust them. I'm not sure if that helps with temps though.
My telemetry temp sensor is on the front of the cylinder head tucked in right next to the cylinder wall. I also checked temperatures around exhaust port and other parts of the cylinder head with a infrared temperature gauge.
I thought this was good into about air cooled two stroke cylinder head temperatures.
In the the picture you can can an idea of where my temperature sensor is. It's the two wires going into head near a small dollop of rtv. I also reinstalled head gasket, I didn't have enough squish clearance on the reed motor with gasket removed
I don't post much, but when i do i prefer Dos Eques.