Brake adjustment Question (Drums)

[Lippyp]

Two questions for all the members of the drum brake club (OK and anybody else too)

1: Should the front drums come off my 67 C10 without having to pull the whole hub and bearings? I cant seem to see where they come apart, is it likely that they have just rusted up and then been painted over? Tips on seperating wlecomed if this is the case

2: What is the best way to adjust these properly, I recently pulled the drum and hubs and had to back the brakes off a bit and obviously didn't get the adjusted up right afterwards as they are not stopping as well as they did before. I didn't distrub anything of the brakes themselves, just cleaned them with brake cleaner and squirted some anti-seize here and there in anticipation of the winter. I know there is no air in the system but the pedal firms up with a pump.

Help! it's been a while since I had a car with any drum brakes let alone on all four wheels. My Haynes manual is disappointingly vague in this area.