That's very helpful all. The last steerer I cut was an alloy steerer mated to a carbon fork. With the 120mm 3TTT Forgie stem I spec'd out, I was able to exactly duplicate the position of the previous Columbus bicycle that this frame replaced. So, yes I measured twice (at least) then cut. Because the position measured identical to my previous fit, no test riding was required. I would expect to do the same with a new carbon frame I may get. I was just wondering what to expect from the steerer as received and how easy it would be to cut it to the size required, whether to leave some room above the stem and how cutting it with my miter box and hacksaw.