My 48" Tracer is leaving stragglers. Not a strip of uncut grass or anything, but random blades that are not getting cut. It's irritating, I have to double cut and there's really no need to in my opinion. If it matters, the problems I'm having are with the "thinner" lawns or the ones with a fair amount of weeds mixed in with the grass. The well-fertilized ones with the denser/thicker grass this is not an issue, at least I don't think. I'll need to be keeping a closer eye on this... The blades have been sharpened probably 3 or 4 times(I have 4 sets and change them out every 8 hours). There is a VERY slight rounding of the corner on the blades. I do my best to avoid it when sharpening but it's difficult. My question is, on a 3-blade deck like this where the two outer blades are staggered reward and in slightly to overlap the cut of the middle blade, how close are the tolerances? Is there much room for a blade getting "shorter" due to being ground on and having the corner even slightly rounded? I know I'm not going too fast. It's doing this at walking speed. I'm thinking it may be this particular set of blades, it wasn't doing it to my knowledge until I changed them for a sharp pair. And it's been doing it since the sharp blades were put on, so I know it's not a dullness issue. Or are these blades just done with, and I need to get some more? I haven't had this problem in the past... Any other things I can look at for this? Here's a pic. Where the shadow ends, you can see the uncut blades.