Wondering what the diameter seatpost we could get that would eliminate the need for the shim, and if folks think that would help keep it better secured?
I am dealing with this right now and the answer is get the Peugeot shim and post. I can't find anything that is close enough to work. I tried a 25.3mm steel post but it was not tight enough. The next size I had in my pitiful inventory was much to big and I tried to find a 25.4 but even it might be too small. Anyway...
I went with the original post, shim and saddle clamp and works just fine. It sort of suits the Brooks mattress saddle that I am installing on the bike.