As for ETMY, " 2.1 damping filters " have been installed on ITMY top mass main chain, while the cavity was locked. The loops are working fine, and are stable. From now,  damping GAINS will be set to -1

Attached is a spectra showing a comparison of the new filters with ISI Isolated (today, green curve) and the old filters with ISI damped (May 2013 blue curve).

In order to characterize the performances of the filters ONLY, I will take a similar spectra when the ISI will be damped, whenever I will have the opportunity to do so.