So I just recenlty (3 weeks ago) back into cycling after many years. I purchased a cannondale Quick 6 XL. I am 6'3" and the sales person at my LBS spent time putting me on different bikes and riding them for fit. I have since found that in fine tuning the seat I am now 2" past the max height on the seat tube and I'm guesssing I need to raise the post a little more. The seat post is 350mm and the largest I have seen for a new seat post is 450mm is this enough? Should I be after the LBS for a poor fitting? Or is it just me?