If it makes you feel any better, I ended up grinding off much of the hex cap from all of my wheel bolts to then be flush with the surface of the adapter ring. That left about 3/16" of the original hex cap - just enough to get on it with a socket to tighten them up to 80 ft. lbs... For attaching the Fuchs rims I went with studs through the adapters - Wasn't about to go through all that nonsense, again.......
Sometimes "Hokiness" is required to make things work.