Gravel + lots of dust + dust cycled through miles of driving = trashed heims. There's also the high NVH factor, as mentioned above. This gets way worse when you have a cage tied to the body, worse yet when parts of your suspension are attached to the aforementioned cage . . .
The previous iteration of my Falcon was almost all heims, and it made me nearly homicidal while driving. This time, it's going heim-less.