[Mark in MT]

I have been using SL-7 for many years, general purpose grade, make take a while if the bushings are .010 undersized as some are. I also have a KL mandrel, using a KL7 stone. About the same finish as the SL, but easier to come by. I am using honing oil that I got from McMaster Carr in the pin hone and the cylinder hone, works great. Don't try to cheap out and use ATF, you will just get frustrated. ( Don't ask me how I know.)