Just a brief note on the CHARD P error signal.
When fitting an excitation for injection, I noticed a large peak at 6 Hz that I hadn't seen previously.  
I'm guessing it's from RM damping but I'm not 100% sure.

I went back to a NOMINAL_LOW_NOISE time from last March 12, 2025, to compare what we had before.  
There seems to be a number of differences.

There's some large broad peak around 16 Hz in March 12 that's no longer there now.
I checked a couple of times in that March 12 lock at this broad 16 Hz lump is always there.

The 6 Hz peak is much larger now, but there appears to be a small peak there even in March.

Not sure the causes of such differences, but someone who knows more about the HAM1 changes could have better insight, especially related to the ISI upgrade and status of the RMs.
The comparison is not fair either, since we are only at high noise, 20 W of input power now for June 01, whereas in March we had NLN and full power.