Thanks Doc. I'm guessing interference near the top. Were you considering just drilling some new mounting holes in the air-dams themselves (move them down a bit) or do you figure the fix would be more complex?
ETA:
Ah HA!!!! said the blind man. I looked at the installation PDF file and seems as if these guys mount to the running light bracket area available on Road Kings and the Road Glide. We might not even have the associated brackets.
ETA2:
I looked closer at this AM and seems like the mounting points are there on RGs too so scratch my 1st ETA (maybe).