See the attached for the ACT to CPS at air HEPI locked ISI TF from 24 July compared to this morning with the HEPI loops closed (position loops) with the chamber under vacuum.  As expected the stuff between 10 & 40 hz moves down in frequency and is softened.

Remember, HAM2,like HAM3, HEPI has custom designed loops with the horizontal dofs with a 2hz UGF.  The H3 thing seems to move the most and stands out all by its lonesome.  But with the 2hz ugf rather than the 5hz, it isn't a terribly deep zero.