This is how I machine the spherical bearing mod.


Purple is the arm
Blue is the bearing race/body
Red is the bearing
Black is the inner sleeve
Green is the I.A.Brace

You should be able to see how you can tighten this as much as you like and the arm and bearing race will turn freely while the brace, sleeve, and bearing will be completely solid mounted to your frame. You can also see the only place where any slop can be a factor is from the bearing/race fit. These bearings are rated at 35k lbs each and should wear for the life of your truck if kept lubricated.

I would like to note that the fit between the bearing and the race does give a small amount of wiggle in this application.