Stud broke

Make them fix it. Tire monkeys should know about left-hand threads, but many don't. It wasn't just Mopar cars, many cars both domestic and foreign used LH studs. Goodyear idiots messed up a stud and didn't tell me. When the tread separated on the highway weeks later, I tried to remove the wheel and the stud just spun in the hub. The monkey must have kept turning up his impact wrench until he spun the stud.

In early cars (1968 down?), the factory swaged the front studs to secure the drums. You need to file the swage off. You might cut the stud flush with a hacksaw and drill it out a bit to remove the swage. I have beat the studs out with a hammer in a junkyard to obtain a hub, which sheared the swage off.