After fighting last year with the old blade that has been broken rewelded and bent beyond recognition, I broke down and tried this fix. It worked fantastic, granted I had access to a shop that made a new bar for me, and they also cut all the blades down so I did not have to. I did not countersink the rivets, I put them in and then ground off the part that stuck out. Still worked well enough to cut the large weeds on my acreage, went through hollyhock stalks like going through grass. I am very impressed by the time it took to put in these instructions and I very much appreciate having them.