I'm confused.
You guys are holding the head end of the stud with a wrench...right?
If you're holding the head with a wrench, the stud won't spin and obviously neither will the washer.
The nut end is different. lube the o-ring (with your favorite o-ring lubricant), apply anti-seize to the nut/threads and engaging face, install the washer dry and the washer should nut turn.
Caveat: If you use Supertec head studs, the studs can be installed after the cylinders are in place. Without head studs, tightening the case bolts and installing the piston cylinder package becomes incredibly easy.
