The bike is an '84 Trek 620. I'm 6'2" and the bike has a 61cm frame. I'm using the nitto dirtdrop stem (short reach/high rise) with the mustache bars, and I have the bars set at about the same height as the seat. As I said, I really like the mustaches, but they might not be ideal for riding around the track. I think part of the difference may be that when I am riding around town, I am going up hills often enough, at which point I tend to move my hands back along the bend of the bars. But when it comes to riding fast on a flat surface, the only position which seems to really work, is to be all the way forward. I'm thinking it must be the different riding style or hand position, because I can go for a two hour relaxed ride, and feel fine, but forty minutes around the track results in pain and numbness.