Hi All
Well as I think everybody suspected the problem is in the tension spring on the adjusters. So I will be ordering some replacement springs.
The rear most or trailing adjuster once the brake shoe was pulled back could be turned by hand with almost no resistance. Once the end was ground off so the adjuster could be remove revealed the spring was broken.
While the forward or leading adjuster required 25-30 ft.lbs of torque to turn, but on close examination it was discovered was broken into 3 segments.
Take a look at the brake shoes, these are the original shoes mileage 24844.