How much extra do you need, I have some cut pieces. I also have a shim pack but I need that, it only has 2 x 1mm, 1 x 2mm, 1 x 5mm shims I think, you can stack them together and they sit on a little sleeve that slots into the seat post.

A single piece of plumber tape will attach any piece to the seat mast and the little 'stub' inside the seat stay will hold everything in place. I use the plumbers tape to stop the pieces squeaking against each other. If you overlap the tape it will not slide in though, so make it one width only.

I have also used the clamp to hold the seat post 'up' above the little stub. It worked on the old one and the new ones have the rough surface on the seat post so even stronger grip.

---

https://www.pbandjcoaching.com
https://www.thisbigroadtrip.com