Glad I came here to ask also to get more info on the intricacies of fitting. The conversion of my 90mm stem to only 75mm due to angle clears things up for me. I was curious why even with the shorter TT's of the Madone's my reach felt eerily similar to my current bike and the fact is my effective reach was unchanged as they were normal stems - - limited rise (6 degree maybe) and 100-110mm. So essentially I lost the TT reduction to stem. Probably would not have learned that from a bike shop as I was fit on my current bike through about a 60-90 process.