The area behind the front and back tires are so hard to keep clean! the least amount of wter or dirt and it spits all up the side! Is there a way to keep that at a minimum? I mean it doesnt even wash out its jsut a light gray layer thats like there for ever...I caly bared the hell out of it and got it looking alot better but still had traces..first pass at the track burning out it was back and wont come off without clay bar :\