Thanks Tom, I hadn't seen this. I haven't heard of three bond before either,
but will check it out.

wrote in message
oups.com...
The shop manual for the yanmar sd20-31 drives suggests using threebond
1215 on the bolts for the zinc... There should be full contact between
the zinc and the saildrive anyway -- I always hit both with a bit of
emery paper before I put them together.

-- Tom.