Is you chassis an '03 or '02? Even if your motorhome is an '03, it could be on an '02 chassis. Ford went to Bilstein shocks somewhere around the end of '02 or beginning of '03, i forget. If you have Bilsteins, you have good shocks. If they are blue and yellow shocks, you have Bilsteins. If they are black, you have Monroe knock offs. Just go to a Ford dealer capable of servicing your rig and tell them you have alot of sway right to left and porpoising front to back. They should replace the shocks free under your 3 yr, 36,000 mile warranty with the Bilsteins. I had them put on and they are great. Also if your chassis is the '02, for some reason, as you probably read already, they didnt put the Z brackets on them all. Mine did not have them and I had them do that also. Somewhere in those discussions from last year, there was mention of the part numbers needed for those Z brackets. And the fact that there was some confusion when Ford came out with different service bulletins giving different part numbers. I think you want the service bulletin that came out around Sept. of '03 if memory serves me correct. The torsion bar could be loose and making the noise also.
Mike And Debbie- Northeast Ohio
2011 Ford F150 Ecoboost engine- SWEET!!
2011 Jayco Eagle 322FKS TT