My wife and I are considering getting a Powderkeg and I have a question. The Salsa website says the medium/small frame size comes with 175mm captain/170mm stoker cranks. However, it says the large/small comes with 175/175 cranks. The 175mm for a size small stoker seems odd and I am wondering if that is a typo. Can comment on what they have seen or know about the crank lengths?