I can purchase a dropper seat post for a great price for my Stumpjumper. Problem is, it's a 27.2mm diameter and my seat post requires 30.9mm. LBS says I can shim the post so it fits. Looking for feedback about shimming vs purchasing the correct size.
Thanks in advance,
Mtbr's 2016 Winter Biking GearReviews and Roundups
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Thread: Shimming a seatpost