Recently bought a 30" RER, model #M301021BE and would like to make it a mulching mower. I can't find anything available to purchase. I put new Gator blades on it and they seem to do a good job. If i can't find a product that will seal the chute, is it feasible to fabricate something myself? Does the deck need to be designed in a specific way to accommodate mulching? I don't care to bag (I have the bagger kit) and don't like the side discharge. Anyone have any ideas? Thanks in advance...