In spite of every thing I could do to screw up this engine, it is still running like a top.
I found some kind of goo that had gotten into the tanks and was plugging up the fuel supply just enough to let it run, but not let fuel flow free enough for full throttle operations.
Pulled all the lines and filters and replaced/cleaned them all.
All seems well now. The coolant temps are now down to 200 210 deg. With that cowl you gave me.
The wiring block made all the rough running leave the engine. It purrs like a kitten now.
I think that now we can start to enjoy the plane. Just in time for the second half of summer