I went into the hall to fix the NMR tune, and was able to do so pretty quickly. We are again polarizing. The microwave power is still pretty low; I couldn't see anything obvious to fix for that continuing problem. It should take awhile to polarize with such low power, but we're up to about 50% already.
The hottest spot on the upper platform was close to 5mR/h. The ARM said I was up there for a total of about 10 minutes.