Left rear brake drum gets hot

can't tell from pics. Do you have the Left adjuster on the Left (driver's side) backing plate? The Left adjuster has an "L" stamped in rhe end of the adjusting screw, and the kerf of the adjuster's "buttress" teeth should face downward so that when the pawl moves upward it will grab a tooth, but when the pawl returns to its starting position it will skate across the backside of the tooth easily. Have you tried advancing the adjuster pawl by hand? You can simulate actual operation by plucking the apply cable sideways. The pawl should grab one tooth at a time, then after one "pluck" should return back into its starting position ready to grab the next tooth.