Saw Corey's note re: "ISS Diffracted Power Low," so I took the opportunity provided by the recent lockloss to adjust the ISS RefSignal.  The RefSignal changed from -1.90 V to -1.88 V, which brought the diffracted power % to ~4% from just below 3%.  The diffracted power % changed due to the enclosure slowly returning to thermal equlibrium after yesterday's FSS tune up, which changed the amount of power transmitted through the PMC.