Revisiting an old thread with some missing info:
I just recently adjusted my parking brake using some hints on this thread, and I figured out some things that do not seem to be mentioned anywhere else but they do make a big difference.
After removing the rear wheels, take a large C-clamp or robust screwdriver and compress the brake caliper slightly (not all the way, just enough to let them move freely) to take drag off the rotor.
This will 1) Make it easier to rotate the rotor into position, and 2) give a more accurate "reading" when rotating the hub to check for e-brake tightness. With the disc brakes in operating position, there is friction creating drag which makes it harder on one's fingers to rotate the wheel and determine when the shoes in the drum parking brake have already released.
This may sound odd, but locating the adjusting star is somehow easier in a dimly lit area using a flashlight in the hole. Too much ambient light creates shadows and your eyes will have trouble adjusting to a smaller dark area.