Hey Charlie! Enjoyed meeting you and checking out your bike. I haven't forgotten about you or the X-500. I'd say it would be an automatic "GO" at this point but my better half and I are worried about a tax bill moving through Congress so we are in lockdown mode as far as "bing" spending....meaning if we have it already, do not need it, we don't buy it. But I look at Craigslist every morning to be sure it's still there! I am hoping (no offense) that no one buys it before I have a chance to grab it. I believe you're right about the 8mm nut....it should be the same size as the one on your bike. Thank you for the heads up. I hope to see you again soon and take that 500 off your hands.
Russell