does anyone here experience a ratteling noise fromt he front sprocket area under hard acceleration from an idle when in 2nd, 3rd, 4th, and 5th gear? it only lasts untill the engine is up to about 4500rpms or so, and im pretty sure its the chain ratteling ont he fornt sprocket due to the engines "every other" firing pattern. anyone have any comments to add to this? my friends 250f does the same thing pretty much. just wanted to see what some more experienced yzf pilots had to say.