Re wandering 59Hz bump first seen around 25 May and reported Jun 1: With the DQ channels, I checked to 125Hz and it does not show itself.  Maybe the power cycle cleaned it out.

Otherwise, attached are the CPS spectra for all the BSCs:

The ETMX St1 V1 looks much better now.  The ITMX St2 H3 is a little better but the ITMX St1 V1 is quite noisy now.  I better check this tomorrow to see if it changes.