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I bought a deck height tool and a dial guage to help me set up my new KTM. I found I had the piston .25MM too high last time, and I'm sure that's what cause my over heating. It increased compression and decrease squish causing it to run a little hot.
I put another gasket under the cylinder to raise the deck. I didn't have the optimal combo of gaskets, so I erred on the side of caution. Might lose a little snap, but it shouldn't run hot. I can probably even run pump gas. I did put a smaller insert in the head to gain back a little compression.
I can't wait to hit Crow hill with it again...