Self adjusters keep overtighten

Adjusters on wrong side of car can actually unadjust. Dad discovered this with his sisters/bro-in-laws Mercury Comet ( gosh that was a lot of years ago ). More use equaled less or weaker brakes.
There are so many things that can cause a drum brake to drag and overheat. Out of round drums, egg shaped shoes, notches worn in backing plates, fault in wheel cylinder ( a piston froze or installed backward ), on and on. To back off the adjuster would temporarily cure every one of them.
So show us some pics. If we see cable, cable guides, adjust paw, and everything else are in the proper positions, we might rule out the adjuster.