Hello Everyone, I was needed some help with the blades I got on my machines. On my new ExMark Turf Tracer 48 inch I have normal blades on them and I did so far about 15 hours of mowing with them. On my Husqvarna 48 in I have the gator blades where they got the teeth on them. My question is how often should I sharpen them? I also have two sets of each just in case. Another thing is should I do it myself or have someone else do it because I know that the weight has to be even or it can cause some problems when mowing. If you take to much steel off on one side than the other with a grinder you would have problems wouldnt you? Any ideas???