Hey Thanks Denny, I just read back through all the previous input from you and Frank...
The Michigan wheel I was looking at locally was a 3B (992003), not 4B. Same goes for the PowerTech prop I mentioned, 3B. Sorry for missing that earlier:
https://www.deepblueyachtsupply.com/...-vortex-992003
I don't think the 17p pitch will work out with a 3B aluminum, due to the thicker blades, flex, and lighter weight...
I see you already commented on the Rebel props before I mentioned them

Hard to turn and intended for higher HP, noted and thank you!
I've tinkered with the tach and motor for two evenings now with many of the troubleshooting techniques I've found online and am frustrated. I can't track the grey sending wire to my engine...
I should be back out on the boat tomorrow