Well Crap!!
Started my engine yesterday for the first time.
Used 15:1 ethanol free fuel. and a 24x12 prop.
Primed it and after about 5 tries with the electric starter she fired off.
Let her run for several seconds then advanced the throttle to about 3/4.
She ran about 1-1/2 minutes then something broke! It did not seize up.
Talked to Horizon and sending it back.
I will post an update when I know what happened.