Boone Cycles can definately help you out, they're a solid shop with insight into all things technical re: cycling. They are a bit pricey but you're paying for exceptional experience and know how and that's always worth a few bucks more. I know Jeff and Joy professionally and if they or their mechanics don't know what you need it hasn't been invented yet. Plus they'll tell you if they can't help you instead of faking it and doing you wrong. Good People. Also now one of the closest shops to downtown with the recent demise of Shirars.

If they don't suit you then try Bikesport out near Alabama and ...Edloe or Timmons. I've met those guys a few times over the years and they're topnotch as well. Also a wrench there named Zack I know has experience riding fixed both track and street.