Inspired by the earlier cotic thread...
I'm between 5'11 and 6', weigh approx 13st and ride a cotic soul medium. I've a fair bit of seatpost showing and currently run an SDG micro layback I-beam. I've notice quite a bit of flex on this and i was wondering if this is either something to just live with due to my weight and bike size or if the SDG post was notoriously flexy and something stiffer such as a Thompson would cure it?

