Red scotchbrite pad should work great. If you have a gummy stone they work well. Something easy you can do in the future is grab some parafin wax and rub it on the edges at the end of the day to seal them from road crap. You can get it at the supermarket under the name Gulf Wax. It is normally used for canning.
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2011 Smokin Buck Ferton 155
2013 Flow NX2-SE
2013 Flow Hylite boa
Burton Stagger pants/jacket