Since we lost lock this morning, I took this opportunity to change the max gain to nominal values for ITMY mode 3, 12 and 15. Previously these modes had their max gain set to zero (although we had non zero nominal values for them). Often Guardian would set the gain to max for these modes and hence stop damping them - which is not ideal. In the changed scenario, Guardian will damp these modes regardless of whether max or nominal gain is applied. I have committed the lscparams.py on the svn and loaded the coefficients.
I will track their development over the next few lock stretches.
Following up these changes, I found that no changes were obserrved on ITMY mode 3 and 15, however ITMY 12 monitor level dropped from around 1.0 to less than 0.5- which is good to see.