CWB,
You are correct, the riser on the 04 Dually is thicker, on mine I was just short of center shot when the shop was setting it up, however I contacted TT and Jerrid is sending me a new windage unit that they are making special for the Bowtechs with the thicker risers, I talked to them on Mon. and the units were supposed to ship on Wed., all TT asks is that you send them back the original windage unit.