I think I still have the crown grind fixture for my old Sioux machine. I know I have a flat grind fixture and rocker arm tip re-surfacer. I use my Tobin Arp for about everything now since the stone surface speed never changes from brand new to worn out. I recently (2016) used the flathead Ford fixture for valve stems as I prefer the non adjustable lifters. Any are welcome for your inspection for ideas if you don't come up with one.
