Phil
Thanks for the information. My engine number is ZDM 904A2C*079747 so it looks like it is a small valver, unless it comes after that run. The MotoOne performance Notebook is a great resource thanks. As is the information about Louigi Moto.
Oh well to look on the bright side that stops me wasting money on 41mm Keihins! happy, happy, happy lalalalala
Looks like the only cost effective tune in the short term is a smaller sprocket and cornering faster!
Thanks guys
Jon