Jimmy bananas

Try turning the offending wheel around, so it turns backwards on the same axel!
I had the same problem but thought it was so strange that it was a defect with mine I turned it around and it doesnt " tighten" the nuts! I know it sounds dumb, but try it!!

Use a 15x8 apc or zinger. My G-23 gas works great on my Taylorcraft. It dosent seem to like 16" props. 15" lets the engine rev more

good luck