Is the existing seal a PSS? If so, the bellows have to be changed every 5 years or so. I believe the issue is the bellows hardens and then doesn't hold proper tension on the rotor, attached to the shaft. This may explain your surveyor issue. Tides is a different type of seal, called a lip seal. Despite the fact that PSS gets some negative comments at this site, I have used them successfully for many years, as have others here.
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Ken on Hatt Trick
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