This has got to be simple, I'm doing something wrong and overlooking the obvious. I have a beam with a pivot, a support post, and a weight at the end (also on a pivot). The pivots are cylinders, the beam is a cube, the support post is a cube, and the weight is a cube. The cubes have been 'boolean-ed' to make the necessary space for movement. The problem is, everything falls apart and through each other. I have looked at other questions here on SE concerning the 'fall-through' problem, but they all deal with active and passive settings. As far as I can tell, everything is set correctly. They bounce off each other and the floor after falling apart. There's something about the holes in the support and weight that are not interacting with the pivot pins. What am I missing?
The problem was the Shape under Rigid Body Collisions was set to the default of Convex Hull. Changing it to Mesh made things work as expected, with the addition of increasing the Sensitivity. Increasing Steps Per Second in the Rigid Body World settings improved the interaction as well.