I am asking because I am a Newbie about to buy a new bike. I know that based on measurements, my ideal top tube length is 50 CM. The bike is 51.7. For other reasons, the bike is the right size. So I was just double-checking what can be done to fit the bike.

There are not alot of WSD bikes around in various sizes to test ride. I'm sure once my LBS makes the adjustments and I test ride the bike, everything will be fine.