Thanks Cab, I really appreciate your reply.
You are spot on about how it behaves, struggles to break loose below 3000 then fries the tyres till I back off. It is ground on a 108 LSA and I get what you're saying about advancing it 4 - 6 degrees. I'm happy to give it a shot but I'm a bit concerned as to what that will do for intake vacuum as I'm already struggling to get a decent brake pedal. Do you think advancing the cam will help with this or could it make thing worse?