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  • The seat post situation hasn't worked out as planned. The Shimano 600ax one arrived however it is a little too fat to fit in. I'm contemplating filling off 1mm on each side to make it fit. The post is really thick so it shouldn't make a difference structurally.

    Sand it down, it will be fine. Ive done the same to stems/seatposts to fit french sized forks and seat tubes. Just get loads of sandpapers and a file (I got one you can borrow) and remember to keep checking you've sanded it down enough

  • Yeah that is probably what I'll do, for now anyway. Here's a pic comparing the air and shimano posts. Air is on the left


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  • That will require a lot of sanding.... better get the flat file out. I wouldn't bother to be honest, that's way too much material to remove. A seatpost that only touches the inside of the seattube at certain points will direct force to those spots causing (a higher than normal) stress on the material. Could lead to cracks.

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