An update re our keel issue. Opal have repaired the keel by grinding it back and sheathing with epoxy, Gelshield, primer and antifoul. The boat is now back in the water.
However, I have only accepted this as a temporary repair and I am still pursuing a full resolution to the problem. I had the keel surveyed and my surveyor agreed that we need reassurance about both the structural integrirty of the keel at present and the long term prognosis. This is now being addressed by Bavaria and I hope to have some answers in the next month or so.
I understand that the initial problem with the epoxy filler failing has happened to a number of B37s, so my problem is not unique.
Watch this space!