Ok, I think I get how you did that. I never tore into my Kohler so I'm not entirely familiar with the flywheel side of the crank. Are you saying the Kohler flywheel nut threads are bigger than a gx390? And that you slip the aftermarket hub over the gx390 crank threads, using the flywheel nut to hold it in place and a dowel to keep it from slipping? Solid dowel?
Thanks for you reply.