The shape of the sidebands on B4 PC is shown in the attached plots at different moments of the DRMI lock.

The two-sport distribution is quite clear on 6MHz USB/LSB and 56MHz LSB. It dosent't seems to be much influenced by CHRoCC power change and offset on alignment loops.

Pic 1: 16.29UTC  before CHRoCC power change

Pic 2: 16.59UTC  ~30 min after CHRoCC power change

Pic 3: 17.25 UTC  ~25 min after CHRoCC power reversed to original value

Pic 4: 18.09 UTC  ~70 min after CHRoCC power reversed to original value

Pic 5: 18.27 UTC  last lock ~90 min after CHRoCC power reversed to original value