Any of you guys have an issue with the adapter studs for the rear being too short if your running Al/Al and not Al/St. The studs top out at the top of the nut and the spin-on nut covers dont work. Have you pressed them out and replaced with longer ones? If so what are the new stud dimensions?

That is a common problem on most adapters running 2 aluminum wheels on the back. We sell all of our spikes and other lug covers in the push on versions for this reason.
Our studs were the longest ones available at the time and they measure around 3.5" from the plate of the adapter to the top of the stud, but there may be some longer stud made now that I am not aware of.

Lock, do you have know the thread pitch on the studs?