I have mentioned on previous threads a problem with vibration when getting up to the 7kt mark under power. (2,800 rpm).
From the technical forum of the Cruising Association it seems most experts are pointing me towards the feathering prop as the likely culprit. No one using a kiwi prop has said this is an issue for them.
I was going to get a Kiwi as the price savings would keep the admiral happy but it turns out that they dont do a 3 blades on the ISO 35 Shaft, and the 4 blade was a Whooping 2700UDD So I have ordered a 3 blades Flexofold
Ultimately it comes down to the finances (anything to keep the admiral at bay 🤩🤩🤩)