I am a week away from getting my new Bryant 58cm. I decided (after test-riding a Kingfield] that I would eventually want to upgrade most of the parts on the off-the-shelf Bryant Alfine, so I had my LBS pull together the parts I really wanted (like Alfine 11, dynamo, upright bars, 36h rims, and CenterTrack. Gates CenterTrack is MIA right now (problems getting shipment of rear pulleys) and they are out of (or won't sell) the old pulleys. I am starting to wonder if the problem getting the rear pulleys for the GTX system (CenterTrack) has something to do with the CDS (original) pulley problems. Instead of waiting another three months (that's how long I have been waiting for CenterTrack) -- I am going to get my bike with an "old fashioned" chain using 44 front chainring and 22 rear cog (out-of-shape legs vs. San Francisco hills), and swap out the three parts for CenterTrack when Gates is up to speed with their supply chain.