I got my 51 chevy 3100 from a friend. It was parked on her property in Arizona where it sat for many years. I had it shipped to Maine and among other things I replaced some brake parts. When I pulled off one of the rear drums I found a small snake,whole but dried up,wrapped around the star adjuster.There are no adjusting slots in the backing plate or drum.The only way that guy could have gotten in there was through a round hole in the hub that lines up with another hole in the drum.Must have just squeezed itself in there and couldn't figure out how to get back out.The snake,which is about a foot long,is in a glass display case on my bar.---Jack