Woodcraft has the Rikon 1/2 hp grinder on sale for $99. I have a 8" steel 1-1/2" CBN wheel and keep a white wheel on the other side. It's the old Woodcraft no name grinder. I now seem to have deem to have some vibration with this system. Will a 1/2 hp grinder work with a 8" steel CBN wheel or do I need the $120 additional for the 1 hp?