My rear brakes started dragging a little yesterday. When I put in new shoes a few months ago, I adjusted them to where they were pretty far from the drum. I wasn't using my ebrake - the cable was sticking and causing thr brake on the drivers side to stick/drag. I fixed the cable and have been using the ebrake since then, and now, the auto adjuster has clicked it's self to the point where the brakes are touching the drums. (If I roll back from a stop on a slight slope, I can feel the brakes come bring the truck to a stop, ever so slightly.) I haven't jacked it up to see how free the wheels turn just yet - but why would the slef adjuster lock the brakes like that?