Does anyone know of a reasonably priced, carbon, deep (50 mm+), preferably clincher rim to build up a racing/training wheel. I know that HED and ZIPP do it, but I was hoping for a cheaper alternative. I have a Spinergy Tillium rear that has the same problem described in a previous post (too few holes), but I would really like to have a good, strong aero-wheel built up on a Powertap SL hub. Opinions? Maybe the wheels put out by Litespeed could be adapted, I don't know.