OK, so I traced all the wires out and made sure all the supply wires were good and all the grounds were good. While doing the grounds and moving wires around, I found a very hot wire bundle. I killed the power and unwrapped it, it was two bundles of neutrals and one bundle of hots, all wrapped together, and melted. Looks like that may be my issue. Looks like a factory job, or at least a professional one, so not sure why it is. I'll fix the wires, wrap them individually, and try it out. Will update in a few days...