There are a few features in the ISI TFs around the resonances of HAM5 but not seen on HAM4.  Jeff suggested TFs with the SUS off.  Attached is the result.  The only thing that stands out without deeper study is a small feature at ~1.5hz on V1.

I reran the TFs completed Saturday but with only 1/4 the averages and just between 0.5 & 5hz.  And, Kiwamu turned the SUS damping back on for the last 15 minutes or so.  This should only affect the V3 results.