Appreciate the input Fuzz, that's reassuring.Fuzz wrote: ↑Sun Aug 09, 2020 2:33 pm The vibration could be normal for your engine. Lots of small engines do that until they are up to speed.
My buddy can find no evidence that the cutlass has ever been changed in his forty year old boat. Yours could be the same. The good news if you do need to change it out you will likely not own it long enough to need to do it again.
When you put a new shaft zinc on it make sure it is a two part one that can be changed out easily.
I'll have my marina guy give his opinion on the cutlass once it's on the hard and he can shake it. He maintains a number of similar boats at the marina and doesnt recommend work if its not needed.
Occurs to me that I can probably just add a 2 piece anode if/when its needed and either leave the existing or just cut it off. The one-piece on there looks perfect right now.