Tried this as I read about it being done a couple of yrs ago. Sorry, no pics so I guess It didn't really happen. Drained oil, set it upside down on some milk crates(boy those are handy) and strapped it down to them. Removed blade and hub, slipped a piece of 1" pipe over the shaft and whacked w/ the 8 pounder until I couldn't see the runout . tacked a piece of flatbar to the deck for the dial indicator's magnetic base to stick on and worked on it w/ pipe and 2 pounder until I got it down to about .008" runout. Reassembled, filled w/ oil and fired it up. Seems as smooth as any other push mover I've had. Sitting running in the yard now to see if crankshaft is going to break. What surprised me was the crank had about 1/4" of runout but it didn't bend the blade.