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@cjr
Has anyone tried cutting down an FSA seatpost with the Di2 alloy insert in it? I have one and it just fits, but I need to feed the wire in very carefully and feel that I'm at risk of crushing it. I was thinking of cutting it down and just using a rubber bung to hold the battery, but I've got no idea how far in the alloy insert goes, or the internal diameter of the seatpost for that matter.
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