So the other day, I just sharpened my blades(they were perfectly sharp by the way) well, I was putting them on, I was on the third and last one. It was tight, but I wanted to make sure it was tight enough. I had a ratchet on top, and a wrench on bottom, both going in different directions. The wrench was lodged against part of the deck...it slipped downwards, while I was still pulling on the ratchet up top, and the blade swung over and cut my hand pretty bad. I had to get 6 stitches, and I haven't been able to work for the past week. So this is a warning out there to all...BE CAREFUL, anything can happen!