okay, thanks for the insight. hope someone else can pitch in. I was afraid you were going to say that. The effective top tube length on the 56cm CC is 570mm whereas the 54cm has an eTT length of 560mm. That's only a 10mm difference. I've already gone down 10mm from 100mm stem to a 90mm stem. Is the only solution to get a smaller frame? I could sell my current at a loss to get the smaller frame but that doesn't seem very cost effective.