Drum Brake Issues

[Thirty-Nine]

I recently did the front discs and the rear drums, but I'm having an issue with the drums.

I had one of the rubber caps pop off the brake cylinder. This caused fluid to leak out, and the spring to come out as well. I reinstalled the spring, finished the drum, and bled it.

I tried the handbrake, and it was very loose, so I went and adjusted the star wheels, and that seemed to fix it—for a while.

Last week I was driving the car and the pedal felt spongy; odd. When I got to my destination, I pulled the handbrake and it was super loose; it did nearly nothing.

So now I have spongy brakes and a non-functioning handbrake. I'm about to simply just bring the darn thing into a shop and have them fix it. But is there anything you can think of that I've done wrong? This isn't my first brake job, but this has me stumped. The only thing I can think is that perhaps the brake adjuster's notches are facing the wrong way? But that doesn't explain the spongy brakes.