SteveK here, the articles are SteveD
Going to ask again if the alignment is true, the shaft is not bent.
Is the boat out of water, the shaft disconnected from the tranny and still stiff to turn by hand. with things dry I would expect some stiffness. No surprise there is shaft wear on a 51 year old. Mine is also 51 yr old and I can freely turn when wet, a bit stiff when dry on hard.
Masking tape used as a shim, I don't think so, that is a new one.
The cutless in the logs were trashed. The two in the struts were ok but replaced them anyways.
That is what is suggesting out of alignment to me.