I've moved the offsets on the FS green QPD A to improve the spot centering on FC2, following 69276 and 73777.  The centering is better, as shown by the attached screenshot. This hasn't had much of an impact on the green build up in the filter cavity, and seems to have redcued the IR build up.   This didn't have much of an impact on the couple of months of downward trend on the FC build ups.