I have a Surly Cross-Check, and when I spend a considerable amount of time on it, my elbows hurt. Everything else feels fine, Standover, Reach, leg exstention, ETC. I spend a considerable amount of time on the hoods, and then when I move to the top bars or the drops, my Elbows really start to hurt. Is this a stem length thing? Seat position? I'm stumped. can anyone help me?