I read in the Haynes manual that the next site after rear drum for brake lever adjustment was where the cable attaches to the brake lever mechanism itself. To get it done would violate the rule of not letting the ol' noggin get under the car no matter how many solid objects were holding the car up. I went to Google which referred me to: www.britishcarspecialists.com and lo and behold on p. 20-21 were truly clear and well illustrated instructions on how to adjust at the rear:take out the clevis pin, screw in the yoke at the end of the cable three turns (holding the fitting on the cable so it would not turn), and lo and behold now tight at midway up with handle.