RE: Engine break-in without wing?
RJ,
I also had to widen the prop hole, I have a 13X7.
Did you have to add any weight to get it to balance? I have had to add 5.5 ounces to the nose, which I was kind of expecting since the OS 91 FX is relatively light. That is to get it to balance at the 3 3/8 mark.
Dave