Originally Posted by
rickybails
On mine the gap was too small for a shim. I got a Peter to send me the slightly fatter version of the seatpost. I have also used a Dahon seatpost for a few years that was the right size. others have recommended putting lube on the seatpost (to get a thin film of it). but also you need to have good seatpost clamps and keep them well lubed (allows you to clamp them tighter).
I used some very thin brass to make a shim. It’s not quite as thick as a drinks can. I put a hole in the shim so that the qr skewer would hold it in place.