Thomas and I cleaned the BSC8 RH.  It did have some large fiber debris under the NiCr wrapped glass form, sitting in the shield.  This came out easily once we removed the RH from the quad structure.  Smaller glass particulate was cleaned with swabs wetted with IPA, and an IPA flush around the macor parts.

Full set of pictures:
https://ligoimages.mit.edu/?c=1031

RH is reinstalled and ready to go.