I recently bought a paddle from Sharpening Supplies (http://www.sharpeningsupplies.com/8-Double-Sided-Paddle-Strop-P315C11.aspx) and proceeded to load the suede side with the Thiers-Issard alox-diamond crayon and the leather side with a crox solution. After having stropped four or five razors with it, I'm noticing a slight grey build up of swarf on the tan-colored suede side (~40-60 laps each here). Any suggestions on how to clean the suede to remove the swarf? Otherwise, the combo is great IMO.