After serious searching (OSB Optics Lab twice, VPW) this morning, Greg and I were able to locate the cleaning fixtures shortly after lunch: they were still attached to some obsolete steering mirrors that were not stored with the bulk of the TCS parts. I carefully removed the tooling (Teflon disk, gussets, handle) from the old mirrors and put it on the new mirrors. This task was completed at about 3:15 PM. We will try cleaning the mirrors tomorrow.