had my Dynamite 18 in the formula hydro out today, was running perfect, brought it in to refuel, set it back in the water and it "hesitated" when i pulled on the throttle, backed off a little and it picked up normal and then fell off again - never did die but just hardly any throttle response in the water, on land, runs fine
any ideas???

You might have gotten something in the fuel when you filled it back up causing a lean condition. Pull the high-speed needle out and shoot some carb or brake cleaner in there (be vary careful as it'll spray back!) to see if anything got stuck in there. All it takes is a tiny particle of anything to mess it up.

thanks - i will try that when i get home tonight and advise