Well, Mark, it pays to mix one's own fuel for a Moki, with racing methanol and my own oil blend, 22% oil, 75/25 synthetic/castor!

It is possible I recorded the wrong rpm on the 19x8. FYI, it was a Menz, not a Mejzlik, my error. That having been said, the numbers I have recorded in my spreadsheet are:

8,800 on the Menz 19x8

8,900 on a Zinger standard 18x8

This engine was in my 160 sized Great Planes Extra 300S. Yup, 8,800 seems high but that's what I've got.