Clutch grinding wheels

I recently bought a Bull clutch grinder and need to get some grinding wheels for it. What are you guys using for the flywheel, floaters and doughnut? Do you use a different one for the clutch discs? What grit are they? Thanks, Gary.

 

I liked the Goodson FGW50 for floaters, flywheel and hat, dry. We used a Ray Franks machine on the discs followed by a quick slap of a 250 grit sanding block while it's still turning on the machine to knock down the high spots.

 

I use the same stone but on a wet grinder. How are you guys keeping floaters flat when they are dry ground. I used a bull grinder once rough ground floaters cooled them off in a cooler with ice. Then did a light clean up grind after