The bolt that holds the rear of the seat to the frame snapped when i initially took it off the bike. It was a captive bolt that was welded to the seat pan. At first, I wanted to avoid cutting the mount, so I mounted a hacksaw blade upside down and cut the welds holding it in place. But in the end, the only real solution was to copy the original design. So i cut the bracket and welded a new m8x1.25 bolt in there.