[TaurusKing]

Are you talking about the edge of the drum opposite the lug side?? Around the circumference of the drum?? It's normal to have a sort of edge build up there.. one of my cars had an edge so bad I ended up cutting the holddown pins on each shoe and just ripping the entire drum off the car, so much rust had built up, even backing the shoes all the way down didn't work... in fact if there's a lot of miles on the shoes, now I just chop the pins anyway because I always use new hardware..