Senior Member
Join Date: Jun 2014
Location: Ontario, Canada
Posts: 4,624
Bikes: iele Latina, Miele Suprema, Miele Uno LS, Miele Miele Beta, MMTB, Bianchi Model Unknown, Fiori Venezia, Fiori Napoli, VeloSport Adamas AX
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Make sure that the minimum insertion mark is BELOW THE TOPTUBE. Otherwise you can snap of the portion of the seat tube that's above the toptube. I saw a bike frame that had that happen.
Cheers