I must be losing my mind. My edger works perfectly but when I changed my blade last year I broke the bolt before I ever got the blade tight. I thought I had the lock washer and flat washer backwards. I got a new bolt and switched the washers order and got the blade tight. I did the same thing this year, but I just wanted to tighten the bolt because the blade came loose. I never took anything apart. So is my dealer giving me a bolt that is too long or am I just crazy?! Strange that it held for a while and then came loose, only to break when I put a wrench to it. Thanks for any suggestions!!