I had a 06 XLT for a short time and the ride was real bad, traded for a 06 EB and the ride was wonderful, XLT has whole different suspension from a EB. I had a 04 Mountaineer and it rode great as well, Even my 06 EB is not as good as the 04 Mountaineer, but I understand from different sources that when Ride Stability Control came about that it did stiffen up the ride on all Explorers, but once again I did experience the same harsh ride on my 06 XLT, I do not think there is much you can do for it.