A little followup observation. Yesterday the krausen in the US-05 beer (1.055, brewed 4/13) began to fall while the WLP001 beer (1.064, brewed 4/12) continued to gradually build and eventually required a blowoff. By yesterday evening the krausen had fallen enough on the US-05 beer that I could put an airlock on it and move it out of the cold area into the 65 degree area. I Just checked it an it's now at 65 degrees and seems to be very controlled. The WLP beer only pushed a small amount out the blowoff and appears to be gradually dropping. Not quite ready to move it to the 66 degree area yet.