I went to the lab yesterday and tuned C13 on the EOM Path servo stage notch (see schematics in DCC-D040105).  I took a before and after supression function in the common path to show the change but it turns out I had not hooked the excitation up, so the data are no good.  

The notch was a little off the EOM resonance.  It was super sensitive and the capacitance of the screwdriver touching the capacitor also affected the notch frequency.  Through trial and error I think I got it centered but its a bit hard to quantify how much better it is.  I took a out1/out2 type transfer function while I was doing the tuning (attached below). It was imposible to get the notch to exactly overlap and cancel the EOM peak.  I guess the idea is to mostly cancel it and not compleatly null over that band. As there is no driving excitation in this measurement I'm not sure how much I trust the abolute magnitude of the supression.  However, it is centered now, we'll see once we re take the loop supression function and unrap the open loop gain from that.

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Data is stored in ligo git repo ctn_labdata under data/20170904_FSSTFs_tuningEOMServoNotch. Zip of data and plotting scripts attached in zip below.