does anybody know any good cleaning chemicals for throttle plates? i have gsxr itbs and the throttle plates look like they are rusted(not actually rusted; but fucked up coloring...dark spots and stuff). i tried carb cleaner and degreaser but none of them worked. also i notice when it was drying the throttle area got "ashe", especially the throttle plates. btw, how do you get rid of the smell of race fuel?