Craig mentioned yesterday that we might want to walk our IMC uncontrolled degree of freedom: the spot position on MC1 and MC3. I made a short script which should step the sliders of MC1 and MC3 in the correct configuration (differential step in pit, common step in yaw). If you want to run it is in

/ligo/gitcommon/labutils/imc_walk

To step both mirrors by eg 0.1 microradians, run python walk_imc_dof_4.py P 0.1

This might not end up being used since Robert suspects much of our jitter could be caused by the multiple roughing pumps running in the LVEA.