Done it several times per manual and many videos on youtube. Still something is wrong. I was driving for a very limited time VERY carefully locally with the rear brakes disabled. That's how I knew they were dragging. Felt immediate increase in power and fuel economy.Bad assumption. First step is to free up the star wheel adjusters and actually adjust the brakes correctly.
What if I roll back the adjusters to allow way more gap between the shoes and drums and let them self adjust? Will it work? I can do that through access openings, without taking off the wheels.
I did notice the plungers did not extend equally out of wheel cylinders when the drums were off, but assumed things get aligned properly when the drums are on and the brakes are applied. Maybe another bad assumption.