Just finished balancing all my blades with my new Mag balancer that came with the sharpener. They were all WAY OFF. Took over 2 hours to get them perfectly balanced. I have been running alot of unbalanced blades on alot of mowers with thousands of hours on them for many years and have never had a spindle problem. Just an observation. It is nice knowing they are balanced but I can't help wondering if it was all a waste of time.