Johnny, a guy called D.W.BUCKINGHAM advertises in the Jampot, claims it will fix the leak ,personally not tried it yet but others tell me its good, 01603 429674 £ 10,inc postage in UK, Andrew.h.

email (option): warbikes@gmail.com

I have fitted these neoprene seals and resused them after servicing and they are excellent, would highly recommend them. Im sure that I read somewhere that Mr Buckingham has passed away but his family are continuing to make these seals so please be aware when enquiring. Pete

Don't know where you are but I can cure any AMC chaincase of its leaks without use of these seals. Its more a matter of careful assembly than trick seals.

it'd cost you though, as it takes me the best part of a day to remedy all the faults.

email (option): deadsheds@yahoo.com

Thank you all for your replies. I have spoken with Dianna Buckingham who is still trading.