The two steering mirror assemblies, D1101851, are installed in BSC2. They went in fairly smoothly. One hitch is where the support bracket attaches to the chamber's lower bracket; the weld from the lower bracket to the chamber wall kept the two surfaces from mounting flush.

The two mirrors are NOT installed yet. They oxidized during their bake and I am still working on figuring out if anything should be done about that. The mirrors shed a little, but it seems as though they are not shedding anywhere near the level that the chamber itself is.