Are you able to turn the drum freely, or are the brake shoes dragging? Sometimes it's necessary to unbolt the wheel cylinder from the backing plate and pry between the backing plate and the drum to get enough of a gap to see what's going on.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!