Jenne noticed the control room symptoms of the ETMX ISI starting to ring up (H1:IMC-F_OUT16 on our Tidal.stp will be gin to oscillate [shot attached] along with the ASC control signals). I brought up the template to watch it and sure enough, ISI ETMX X was ringing up. I switched the X direction blend to the 90mHz and it imediately settled down.

I'm attaching screen shots of the environment control room tools to hopefully help.