Position update: STS2-B and STS2-C are in the BierGarten. They are about a meter apart. Jim is using STS2-C for all corner station sensor correction. STS2-A was moved to the Yend for buried use but it would not center. Robert replaced it with the PEM unit and I put the STS2-A back in the LVEA near HAM2. It currently does not have the igloo in place.
The lack of thermal isolation is evident in the attached plot where the HAM2 blue traces all have much larger low frequency magnitude. Otherwise, the common factor in the coherence plots suggest that HAM5 STS2 is the only unit running well on all axes.
I have lowered the HAM2 unit just now 2330Z so the igloo would fit. It will be several hours likely before it stabilizes. I'll look again at it Monday.
It took many centering attemps but it looks like the STS2-A at HAM2 is now nicely centered. With the igloo just installed though, it may drift as things warm up in the igloo.