I took my standard blades and Gators in for sharpening. Just for kicks I asked to see a couple of new standard blades. Wow, I couldn't believe how much had been ground off my old ones. Probably an inch or more narrower than new ones. I usually use my Gators but, I put the new standards on and the stripes are AWESOME. My old standards didn't fit "exactly" over the new ones either. I was told they are more prone to bend, warp whatever, when they're down that far. The old standards still cut good but, I'll save them for the "bush hog" yard I do.