[mr48chev]

I've smoothed out hundreds of grooves in backing plates where the shoes rubbed in the years I was doing brake jobs. I did most of them with a file then as I didn't have access to a grinder. I'd use a flap wheel now.

Following behind someone else's brake job can always be a challenge as you are always having to check and see what they might have done wrong. Springs in the wrong place or missing, contaminated lining, shoes on backwards as far as primary/secondary go. The shoe with the least lining always goes in front, the one with the most always goes in back and some budget lining came with two different compositions that were marked primary and secondary. kind of like a tan lining and a gray lining.