The off/on throttle hesitation on my 07 FZ has become a real issue since I started using the bike for MotoGymkhana. I've got to solve it somehow, I have a PC III fitted but this hasn't helped although I have yet to try many maps. I've read of having the ECU reflashed but I don't know what that is or if anyone in the Uk would/could d it. Anyone got any ideas about how to reduce or eliminate the hesitation?