Does Anybody know who makes a tubular rim with an offset design. I'm building my Six13 up with Campy.....the only factory set I could find with offset rear spoke design was the Hyperon.

Are there other non-factory wheels that offer this design.

Aerohead makes a 405 gram semi-aero clincher called the aerohead with the offset rear spokes to equalize spoke tension......but they don't make a tubular version.