for some reason when i put the bike on to reserve the float level in the carb sticks causing it to chuck petro out of the overflow and wont rev properly,i dont know if its just coincidence that it does it when on reserve or what,because when i turn the tap back to straight up position it carries on doing it,anybody had similar problems?

For some reason my keihin carb p****d out fuel every time it was leant over, even on the stand.

Strip the carb and check the float height, 19mm I think, theres links to the method somewhere on this site.

Hope this helps.