With low MICH noise, some structure due to SDB1 motion excited by the controls are again visible.

Fig 1 is the TF of SDB1_LC_TX_corr. The main structure is the already seen 29.7 Hz resonance.

Fig 2 is the TF of SDB1_LC_TY_corr. There is a peak at 89 Hz and a low broadband coherence up to 300 Hz.

The coupling depend poor stability of B1p power, and will be lower when an alignment based on B1p quadrant will work, but it would be nice to reduce more SDB1 LC correction.