I recently purchased a mulching kit for my new Husqvarna ZTH 5223. First, this was a headache to install. If there is a drawback to owning this mower, it's installing the kit. Several of the holes did not line up causing drilling. Second, the cutting is not nearly as good as with the regular blades and side discharge. I was highly disappointed in how slow I had to cut the grass to prevent stringers. I was also hoping to cut down on the amount of dust generated but was covered up, especially my legs. The dust wasn't as bad as the side discharge but more in a specific area coming in over the front of the deck. I'm cutting at 2.5" because that's the height my grass looks best, especially with bahia. Any higher cut and I'll be cutting twice a week instead of once. Are there any suggestions short of going back to medium lift blades with the side discharge? I do enjoy the discharge shoot being off the mower enabling me to go a few places that I couldn't before and also allowing close cutting next to bushes/trees/post/etc., from the right side of the deck. I have read a few posts about sharpening blades but don't quite understand the correct angle to sharpen. I haven't sharpened them yet so I'm thinking this may have an effect on the cut. The blades come from the factory sharpened similar to "A". This is about as close as I could simulate the angle. Should I sharpen to "B" or maybe "C" or am I way off here? Thanks for any help!