Does anyone know if a Titus height/frame size recommendation chart exists? Pivot has a nice one on thier website, but I can't find one for Titus. I am 5'8" with a 31" inseam and am wondering if a small or med Carbon X will suit me better. I currently ride a med racer x, but think I may do better with a small. Pivot has similar geo (not surprising) and they would have me on a small. Any thoughts out there from riders who are "in between" sizes?