Developed a "crack" on the seatube near the seat clamp. i believe its a finish (paint) problem, but we don't wanna find out. got desperate and went to the lbs to pick it up, the mechanic said it was ok...its pretty lame, my ROUBAIX SL3 is amazing! comfortable, and super responsive, more than my previous sl2 roubaix...i would blame the difference in performance feel, on my progress (thru hard work) AND changing from 54'' to a 52".