Boreas fits perfectly and when I got the TCR- I tried to set it up the same. Even down to same compact bars etc. Near as dammit- I got them exactly the same but the TCR did not feel the same. In fact it was pretty uncomfortable after a 50 mile ride so started tweaking the fit on it and got it right. Quick look at the bikes and they appear to be almost the same but get the tape out and there are differences. That was when I realised that there are too many variables in bikes to use common factors in setting them up.

My main concerns are saddle height and fore and aft of it. After that it is down to getting the bike comfortable and that can take years.