Thought I should be getting 50mpg, have just found out the bike has been stood for about 3 years prior to being built and sold to me so I imagine the carbs could do with a good clean too. Think I'll spend a weekend working over the fuel system and see how I get on. Was looking for confirmation that 50mpg was about right, cheers.
As for the squirm I think I need to check what's going on with the final drive and rear wheel.
Cant really complain for a £600 bike!