On Thu, 19 Nov 2009 15:34:50 -0600, Alan Pond
wrote:

Had my bottom painted last week and the yard also put a new zinc on the
propeller shaft. I'm sure it doesn't sit 'right' and that I can feel the
shaft wobbling at anything over 2000 rpm.

What can I do about it?

Molesworth

Dive down and fix it.
But seriously, if is this is a "clamp on zinc" on a conventional
propeller shaft I don't believe it is heavy enough to cause vibration.

Cheers,

Bruce
(bruceinbangkokatgmaildotcom)