I'm the guy that used to sell the diaphragms on ebay, probably about 600 of them. I'm pretty much done with that, but there are plenty of fellas that took over. I'm also the one with the two Youtube videos riding a Micro Power, one was my son and is kinda funny how slow he is going. I sold the one in the video and still have another one that has never been fired up, bought both from the same guy. Good luck finding a Grasshopper, I looked for years and could not find the right size and color. I would settle with a plaid one, which seems more common, just have to find a big one.