I centered the IMC WFS.  First I offloaded the MCWFS using the IMC guardian, then moved the IMC to offline (which misliangs MC2) and used the prompt relfection off MC1 to center the WFS.  I had difficulty using the pico mototrs, in part because of large cross coupling between pitch and yaw, and decided it was easier to just go to the floor and center by hand in the end.  I also added a ndscope for centering the MC WFS to the IMC overview screen. 

The spot has returned to a very similar location on IM4 trans after relocking the IMC (0.3P, 0.3Y).