T5 rear brake spongy!

Can anyone help? Rear brake very spongy, about 5mm on shoes, brand new genuine cable, pedal stops rear brake but then can be pressed down almost to the floorboard. Pedal looks fine . Some play in lever/rotary actuator but not excessive.Help.

Check out the amount of wear in the Hub / brake drum itself , also check that the brake pedal mountings (under the floor section) are not rusty or damaged. Then check the cable is correctly seated in the cable retainers in both the Pedal and the engine casing. After that I give up [8-|]