We looked at a spectrum of the Optical levers while we were locking DIFF with low bandwidth. The ETMY pitch was 2 orders of magnitude above all the others, so we switched this back to the legacy decoupling fitlers, and the excess noise went away.  The dashed lines in the attached screenshot are with the new filters, solid lines with the legacy filters for ETMY UIML2P only. 

Some other things that we noticed tonight:

on the ops overview screen the ETMY suspension watchdog can be green even when ETMY is tripped.

We also have had several times that the mode cleaner locks on a wrong mode, where the transmitted counts are low.  In this case we need to unlock it manually, maybe we need to check some thresholds in the guardian.