The fueling reminds me of a round or flat slide carb tuned for snap. Not nearly forgiving as a well tuned cv carb. Which a well tuned cv carb almost outperforms any efi in my opinion. Wish the best on this for affected riders. I might be tempted by throttle tube mods but thats about it. Also different exhaust alone might have a big affect on this reported experience. Last different fuel grades might help.