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  • 27.0 Thomson seatpost keeps slipping in 27.0 old steel frame. don't think the grease is excessive, don't think i'm under torquing the seatpost clamp lug.

    suggestions on anti-slip measures? carbon assembly paste stuff? torque harder? some sort of seatpost collar suitable for lugged frame?

  • I had the same troubles as you (seatpost and seat tube were the same size). It's because of the CNC'd surface of the seatpost. Carbon paste should solve it, but be careful not to overtighten the seatpost clamp as an extra measure. Cost me a frame and an expensive seatpost.

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