Why are they too hot
A large percentage of my service calls seem to be burned breakers/AL bus. Usually the AC breakers, sometimes the mains. It happens all too often. Poor design/engineering.
I picked up a piece of copper the same width and almost the same thickness....close enough for a few weeks of service. The existing breakers/bus for the other units will be toasted long before the repair.
I was going to drill it, shring tube it and cut it on site.
The top, where it bolts to the meter jaws is tinned. I got it from a local shop that builds services/equipment.