Looking at your second photo the vains are to the right, and the marks are almost straight up, which puts the cam "straight up" and as full advanced as it will go. If the vain can move to left or counter clockwise, it would be retarding the cam right?

If I stick a bolt or nut in there to block it, then I want to put it in with the vain to the right of nut/bolt? Correct? So I get the cam in the straight up or close to it position, then if there is some vvt left I can tune it with the computer, right?

It looks like the directions for the comp cams vvt limiter has one putting the block in while the vain is to the left...weird. That would be putting more retarded right?
Thanks!