There was a chap on Ultimate RC who had some hexes made up
http://www.ultimaterc.com/forums/sho...d.php?t=203197
They are currently sold out but he may well make some more up if there is enough interest
I bought 2 sets from him as I wanted some so I can use 12mm Hex wheels on my SC truck, and another set for spares
I could be persuaded to part with a set