Please give me your opinion on the double blade set up. I just put them on and now it blows grass 3 times farther then before. I am running a supermini z with the 24/52. I have the high lifts on the top and the gators on the bottom. My dealer says he has only seen 3 mowers with this set up so far. Also I was wondering how often and how you guys sharpen your blades. And last how do you guys like you supermini z's and super z's.