Originally Posted by cooleric1234
Because it's not that easy. First of all, I don't see the 68x122 mm BB on Nashbar previously mentioned (maybe I'm blind). I've searched across the Internet and I think I MAY have finally found a 68x121.5mm BB, but I'm not totally sure (it doesn't look like square spindles...are those just covers on the last item on the following page?):
http://www.bicyclefitness.com/info/intsale.html
Just give your local bike shop a call. They will be able to order one in for you. As DMF said, a very small amount won't make a difference though.