This morning I got a little bit of time to try some more debugging of ZM1. Jeff Kissel's last alog (lhoalog41034) showed a big feature in the Y to Y measurement and a possible issue with the LL flag/magnet. After team SEI was done with their work and locked up the table, Corey and I checked all around the the suspension for anything that might look or feel wrong. I looked all around the LL OSEM for anything that might cause a problem but didn't find anything. I recentered the OSEMs on  their flags and then we ran the measurements again. No change.

During a lunchtime talk with Betsy, she suggested that I try to run the Y to Y measurement with the top OSEMs backed out and not actuating, and then do the same with the bottom. When I tried it, it looked like the lower frequency feature was much smaller when the top OSEMs were backed out (see attached). I got excited and tried this for pitch as well, but didn't notice much of a difference. This ended my day in HAM6 as I had other teams nipping at my heels.