artic fox 811 on 2005 dodge ram 2500 diesel short bed??

Hi lizwood - I have a similar setup but srw instead of dually. Besides the rubber mat my bed has the sprayed bedliner on it and it has moved 1-2" but never 3-5" which is excessive. Check the angle on your tiedowns also, maybe moving them to a different hole on the frame tiedown will give you a better angle. I am also looking at possibly a dually for my AF811 and was wondering how your factory air suspension is working for you when it is loaded and unloaded, sure would like a little feedback on your setup.