Slacken the cable adjusters right off so the cables are totally slack. Adjust the shoes up till they lock the drums, tap round the drum with a hammer and tighten the adjuster if possible. Slacken the shoe adjuster about 4 "clicks" or, until the drum spins freely. Best to push the calliper pistons back so the pads are off the discs too. Having done both sides the same then re adjust the cables until you have 4-6 clicks on the lever and the wheels lock at the same click. Lock off the cable adjuster nuts with the lock nuts.
Tony.
Tony.