I have a 42" Mini Z comercial. I just purchased the mulching kit for my mower. It does seem to mulch fine but the mower blows so much grass and dust out of the front of the mower I can't stand it. I just recently removed the mulch kit and went back to side discharge. I sent out a previous E-mail with this same concern and this is what Hustler replied. HUSTLER Reply:You need to run the mulching blades for the best performance. The mulching blade part # is 794214, and you need 2 of them. A tip when mulching, slow down a bit and don't take more than 1/3 of the grass off in a single pass. Hope this helps. This is fine if this is the fix for keeping me clean and grass out of my teeth but if changing the type of blade doesn't correct this I just wasted my money. Can you explain to me how changing the blade will keep grass from blowing out of the front of the mower. And I mean alote of grass blowing out.I just don't want to spend unnecessary money on blades if this isn't the fix. By the way I just bought the mower it has about 4hrs on it so for and I love it but I do want to mulch.