PSA.......I had the full on repeated black marks on hands...black marks on rails...alcohol wipes produced mass amounts of black on a paper towel....etc........
Gave my table a 10 year power clean....massive amounts of dust build up brushed and vacuumed out....wet wiped the cloth....the full works....even cleaned the balls.....
I switched from the old school Masters chalk to the Taom chalk and have not noticed any black marks on hands, rails....and very minimal on a alcohol wipe....which is probably just residual dust from the table