Thanks DownUnder,

You are right on the money with the ST's. You know exactly what I am talking about. Didn't realize the smooth part of the shaft was metric.....I have a standard reamer. I am gonna get a metric one this week. I tried reaming the back side of the prop (enough to slide over the smooth section but it was larger than the shaft. This bothered me as I was looking for a snug fit. Now I know!!

You have any thoughts on this engine vs. the U-Can-Do 3D?? I have about talked myself into the 4 stroke.

Are the ST's finicky to adjust or no more than any of the rest?? The .40 seems to load up when coming from low idle up to speed.

Thanks so much for the insight on the prop and thanks for understanding the question.

HAppy New Year

Lamar