Refurbing rear 9" drums on my '72 Demon

The drums were not replaced. I'm attempting to get one more summer (maybe two) out of the 7 1/4" until I can upgrade to an 8 3/4".

To add, when I start the car (it's currently on jack stands) and place the car into drive, and then depress the brake, the drivers side rear drum spins a tiny bit as if the brakes are applied but not quite enough to cause the drum from spinning entirely. The passenger side is a different story, it spins as if I am coasting down the road.

I did not replace the wheel cylinder on the driver side as it appears to be working. The cylinder on the passenger side was shot and had to be replaced. The brake pedal is firm when I engage it, it does not fade. I have engaged and disengaged my parking brake and do not believe that it is partially engaged.

I will attempt to bleed it some more tomorrow, it is possible that it could still have some air in the lines from running it before with the bad wheel cylinder that wasn't removed when I replaced the new cylinder. I'll update as I can. Thanks for the help.