These shoes we get now are not cam ground. I f the drums are new often the shoes contact on the end & grab. Take the left rear shoes of & see how they fit in the drum. If they contact on the edges they need to be ground. If you have a shop around there that can grind shoes have them cam grind them. If not take a power sander & sand the outer parts down a little. Some old vehicles had adjustable anchor pins that you could loosen up & slide the pin up or down to center the shoe, but I dont think that model does.
