well..... let me ask is it greasy or sticky? i asked my dad and he said posibly rubbing achahol butt... i dont no what it would do to your board..... wd 40?... i really dont no, i wish i knew for sure so i could help you, mabey go to hyperltie.com and find the shop phone number and ask some one who might no what whoud harm your board and what wouldnt!
hope that is some what helpful!