don is running the EHO35, he's a meticulous mechanic & changes the oil at 10 hours (he has an ENM Tach/Meter) like clockwork. he's at 800 miles, and he feels that the engine is seated...he never fails to get a 1st-pull start & and is clocking 225mpg at 26-28mph with the 12T @ approx. 8000RPM.
the thing is that with a small 4-stroke, you're not gonna notice a "surge" in performance so much as a new "smoothness" (thru the entire range) that'll curl yer toes...keep us posted