Andy hi
The amount of slippage was minimal and the clamp was quite firmly attached - I am not sure how it rotated into the position it reached but I...
I would pull the three strobe assemblies and just check the crimp connectors as a start. Crimps/connectors seem to be the most common issue in these...
It's odd that the G3X doesn't show that current for the ALT. Why does it only show what seems to be battery charging? We aren't seeing the real load...