I purchased a model z 5200 riding mower and wanted to put a mulching kit on it. When I removed the regular blade, I noticed the spindle has the s shape and the blades in the mulching kit had the star shape. Where can I purchase a mulching kit with the s shape mulching blades? I like the mower and don't want to return it for a different brand. Lowe's doesn't carry the correct mulching blade kit. They didn't even have the s type blades in stock for the 42 in. If I can't find a mulching blades, replacement or kit, I guess I'll just buy the John Deere and take this mower back. If I can't get the moti can't find the