Help required please, Massive tiller judder

[canalowl]

When we bought Harlow she had an awful rudder judder and headed off into the  bank if you so much as took in the flight of a kingfisher or two.  After much discussion with those knowledgable in the black arts we decided that removing two inches from the leading edge would be about right but one inch would be a conservative start so we removed one inch at the first blacking.  Result is that the judder is much reduced and there is a more positive feedback when going hard over.  There is also a general consensus that the steering in somehow less precise and there is still a tendency to wonder if not paying attention.  We've had two more blackings since then but without making any further change - guess that a certain stage you just get used to it.

[Gibbo]

Lionheart No2 had exactly the same problem. Nantwich Canal Centre cut a few inches off (he guessed how much it needed) and it cured it.