I lost the pinch bolt on the rear axle of my Endo :madman: I was travelling by bus and put the bike upside down with both wheels removed in the luggage compartment. Apparently, I forgot to tighten it back up and must have shaken loose. Just found out now when reassembling the bike. Does anyone here know what size I need to get? I would really appreciate your help. I'll be racing on Saturday and I'd be real uneasy knowing it's not there. Thanks!