I can't get into the whole story...but...got a bike built, blueprint said that the chainstays should be 41.5...it arrived at 42.5 center of BB to center rear skewer. It took one year for this frame to be built...I won't mention the builder. Should I care about the #'s. What will the effect of slightly longer seatstays and chainstays be? I am disgusted with some of these "expert" builders!!! I just want to ride my new Ti frame.