ok,a couple weeks ago i moved my crx shell to a diff part of my yard so my folks can regrow grass and shit, and the only place i could put it was under this walnut tree. and now i have alllll these black tuff to wash off spots all over my passenger side. does anyone have a good solution to gettin this off without fading my paint??? ppl whove had this problem should kno best but anyones help is greatly appreciated. once its clean, im movin it somewhere else.