Brake Shoes

Tadams said
................ replace the pads....................

Just to be correct, those are not "pads." They are shoes and "lining", as in "brake shoe lining"

If you ask for "rear pads" instead of "rear brake shoes" at the parts store, they are going to tell you "we don't list those"

I agree that if they are giving trouble, replace the shoes and have the drums turned.