How are year one 10" brake Drums?

I got one drum deff, on the other side, Had a drum with a deep groove inside of it, got one from advance about 11 years ago when I was a teen & had no money for 2 drums, but got it to brake even, its done fine a long time, but now I got prob. & I think the stud holes in the drum that douse not have grooves may be the prob. because the holes have mash out more over the years.
I may see if I can find a good used set of stock drums & just have them turned, if I do need drums!