I measured TFs of MCI after installation of new side stopper (it will be posted later, hopefully).
Figure 1 to 7 show the result.

All TFs seem healthy but have low coherence at low frequencies.
One possible reason is air flow due to the aluminum cover, which just closed MCF flange before but is an aluminum tube to connect MCF to MCE now.

Anyway, suspension TFs themselves seem fine, so we can proceed the closure process.