I just bought a Madone and I need some help w/ the proper stem length. I bought a size 52 bike that comes w/ a 90cm stem. I came from a bike that was too small for me so this set up feels much better. When I am on the hoods of the brake levers, the front hub is hidden for the most part. When I am in the drops, the front hub is in front of the handlebars about 3/4 of an inch. Do I have the right stem length, or should I go longer? Keep in mind that I did the bike fit program on Wrenchscience.com and it recommended a 64cm top tube/stem combo length. Thanks in advance for your help!