Since we have the mode cleaner back, and Jenne has done a little maximizing of the cavity build up, I had a first look at alingment downstream.  I found that IM3 PIT was at +11000 pitch in slider units (which are not urad for the IMs), and that the beam was low on IM4 trans QPD.  By moving IM3 pitch to -7000 cnts, IM4 trans sum was increased from 26uW to 42 uW.  During O2 it was about 45 uW with 2W into the mode cleaner. 

I moved on to looking for the REFL beam by setting PRM to the nominal "aligned" guardian state.  There was nothing on the camera; I went to ISCT1 and I see no beam coming onto the table.  I tried turning the power down to 1 W into the mode cleaner and putting excitations on PRM pit and yaw for a few minutes, but saw nothing on any of the refl diodes.  The mode cleaner had difficulty staying locked at 1 W.  

It seems like the next step is to look in some viewports on HAM1/2 to see if we can see a beam.