My newer bikes have lots of bodywork pieces that are either a flat paint or a satin looking plastic (I don't think the satin ones are painted, but I could be wrong). What do you do when it's time to wax? I waxed over the satin pieces on my Ninja the other day - I am waiting to see how it holds up. The flat pieces are more difficult to figure out. My Aprilia tank (flat black) only looks good if I spray it with an old can of spray cleaner, and even that seems gone after an hour of riding. Suggestions or advice welcome.