As a preparation for doing some DRMI ASC, I've added a loop that servos SR2 to the AS_C QPD.  (see LLO alog 15840) 

As Keita centered AS_C after he finished unclipping the output arm (alog 15145), we can servo SR2 to this QPD to avoid clipping on the Faraday.  The input and output matrix elements are 1, the output goes to M2, the gain for PIT is 500 and Yaw is 3000.  These are both low bandwidth loops for now.  The hope is that this will make using WFS to control the SRM more robust, as was seen at LLO.  We'll see when we get a chance to lock DRMI.