Today, Travis and I discovered that we had incorrect blade tip heights on both the main and reaction UIM masses of the ITMx.  The blades were set ~5mm too high causing Jason to sight a high test mass.  Joe O'dell from RAL happens to be visiting htis week (on the QUAD design team) so we put him to work helping us lower all 4 blades.  Once that was finished, Jason re-observed that we were still ~3-5mm too high.  In conversation with Hugh, it dawns on him that one of the height locking stages of HEPI does not have top stops to constrain upward motion.  And since we removed most of the QUAD, we think possibly stuff floated upward upstairs (HEPI).  We did replace most of the QUAD, but the side constraining HEPI lockers can get jammed into position not alowwing for downward float.  Additionally, the use of the install arm to reinstall the QUAD may have created more upward force on the HEPI than intended.

Jim is poised to check for gaps on the bottom HEPI lockers tomorrow morning first thing, after he gets a sub for his operator chair duty.