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@nomoreknees
I'm building up a beater and I'm having the classic problem of seat post fit.
Internal tube measures 26.8, but won't clamp tight on a 26.8 post.
Shimmed up to 27.0 it works ok, but not great.
My plan is to run a 27.0 reamer in and get the tube round and clean again. Test fit a 27.0 post. If that's loose and there is enough material on the seattube, then ream to 27.2.
What shops in London can anyone recommend specifically for this or who on the forum has the tools to do it?
Thanks for any pointers