with drums do one side at a time!,take a photo first,those can be a fickle thing to get back together if a weirdo spring is the wrong way round,drum rears are fine,I like em,dont like servicing em though.,
trick is once done say new shoes or what ever,leave em slack poor adjustment few days,once been used a day or two itll all have self centred etc,then do your final brake adjust,but even then leave em a little slack if you can,most over adjust them,also dont delete the self adjusters,these actually work if clean and good shoes,be sure the winder threads you adjust by hand are clean and free aswell.
