After Mark posted the MC1 and MC3 plots today (

http://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=4888), I went in and immediately found the offenders - all 4 of the horribly trapped blade tip stops on the intermediate mass were touching.  I sepent some time trying to free them to no avail and decided to come find Cheryl before proceeding and likely misaligning various targets around the HAM2 table.  We agreed that I will disassemble the top 3 BOSEMs and flag mounts to free up the screws in the morning.  IO will then need to realign MC1 and we'll re-run TFs.  An inspection of the same MC3 screws showed they were not touching the blades although were not all necessarily at the spec 0.75mm gap setting (hence the clean TFs there).