So I won and just received a 2006 Powertap Pro (Yellow hub)from ebay. I am really excited to start using power to train. The main reason I went with the Pro over the Standard model is that I can use my race wheels with a magnet during races and still use the PT head unit/cable as a normal computer. I am trying to test this out but I am not getting any reading on the head unit when I have my non-PT wheel installed. Can anyone offer me any help? Thanks.