Sheila, Craig, Thomas, Stefan, Gabriele, Jamie, Hang

1. We had some difficulties locking earlier because our recycling gain was low.  We redid the same routine we have been doing when the recycling gain changes of resetting TR_CARM offsets in the guardian state CARM_5_PM (similar to what is described in 43926 ) We changed the CARM ofset at which the TR_CARM gain is increased to 86 from -48 to -40, and the TR_CARM offset at which we transition to REFL9 we changed from -54 to -48.  The goal of this is to keep doing our transitions at the same real CARM offset when the recycling gain changes due to a misalignment or some other problem.  We spent some time thinking about the plots of REFL power vs TR_CARM power in 433444 and comments.  We are thinking that we can make ourselves less sensitive to needing to redo these steps if we implement some code that scales the TR_CARM offset using the REFL power.  Stefan has a proposal for a change to the front end model for TR_CARM to allow us to try this.  
2. We reduced the CO2 power on both ITMs by about 1W each, so that we are now locking with the common CO2 settings that we would expect should be correct for 15W of input power.  The idea was that we are having truoble getting a good contrast defect with the CO2 power that we would need to imitate the cold state.  However, we are less sensitive to errors in the common lensing that in the differential, so we decided to try setting the common lensing intentionally low so that we have less defect from the imperfect CO2.  This did seem to help reduce the very ugly mode we were seeing at the AS port, and caused no problems for locking.  We were able to lock once or twice like this, but lost lock when the soft loops were engaging.  (The soft loops seemed to be working fine, they were increasing the recycling gain). 
3. Earlier tonight we had difficulty with tidal, the Y arm tidal was off which causes the X arm tidal to run away and hit it's integrator. 
4. We've had both our usual intermittent ALS problem with the XARM locking and a new problem where we are unable to lock the Y arm in green. 44068