This is weird. I have both a Haynes manual and a 1969 GM service manual. When you go to the section that describes the procedure for adjusting the park brake shoes, the illustration shows a rotor/hub that looks nothing like the one on the '69. The illustration in both manuals show one large access hole, mine seems to have 5 small ones. Are these the access holes to adjust the brakes. If so, does anyone know where the adjustment ratchet is relative to the hands of a clock?? The illustrations show 6 o'clock but I couldn't see an adjuster there.