Yamato72, in hindsight, I think I know where we lost it. We went back to look 2 days later, but no luck. We have fenders. So, sometimes I hear something pulled up from the ground ricocheting through the fender and back out. On our Sunday ride, I heard some kind of metal sound I could not place. It stopped, so we kept riding. In hindsight, I suspect to was the rear saddle clamp bolt falling off and ricocheting as it made its way to the ground. Unfortunately, that was on a levee path and it would be very hard to find.
If we find a replacement, Loctite or some type of Threadlocker is a good idea. Alas, I have not had any luck finding a replacement (M5 x 35 mm) in stock at Home Depot or Lowes that looks like it will work. I have looked on the Internet to see if the bolt (odd head) that comes with the Thudbuster can be found, but have not found that either. I have tried to reach Cane Creek by phone, but keep getting busy signals and have not received a reply to my email. Here is a picture of the actual bolt.
