Originally Posted by
ogbigbird
shims? a general seatpost shim can be put in your seat tube, and seeing how they are semi-universal, find one colse and put it in. maybe it will change your required seat post diameter to one that you can more easily find to install.
100% wrong and bad advice.
Seatpost sizes cannot be "approximated", you NEED the
exact correct size. Shims are only temporary until you can get the proper size, a stopgap, not a solution. Seatposts come in .2mm increments all the way from 24 ~ 32mm.