"Brake Failure" (luckily still on jack stands)

I always adjusted the shoes till there was a slight drag, sometimes a slight scrap scrap scrap as the wheel was spun.

Then apply the brakes a few times and check the wheel again. Adjust if needed.

Do for all wheels.

Finally as stated above backup and apply the brake a number of times. I realize you can't do that just yet. Assuming you do have auto adjusters and they are installed correctly the brakes will take care if them selfs.