i have a 68 mustang with rear drum brakes and i replaced the drums and brake pads and the rear right drum is scraping when i drive, when i took of the drum i found some shaving inside i dont what is scrapping against or why 10"x2" drum and 1 3/4" pads don't know what to do.[:@]

 

is it a constant grind or is it intermitent grind quiet grind quiet......if its intermittent it could be that the spindle is bent on the axel. Happened to a nova I had.
If its constant something is not right inside the drum, (assembled maybe wrong)
Hope this helps.
Jason