American Force has been anything but helpful in the fitment of the wheels. When I ordered the adapters I explained to them I was going to run singles on the back but they still sent me adapters for duels. I called them back and they said tuff luck we can't help you, I asked for a stud PN for shorter studs and they said "figure it out yourself." I looked for hours for a stud that was shorter to work on the back, Finally I grabbed the porta-band and fixed the glitch. To make it even harder for those of you who want to run big 10 lug wheels American Force no longer sells the adapters by themselves.
Picture is before and after I cut the studs and hub pilot down for a single wheel.