Run 21669 is the first run in which you see these planes to have a lower efficiency. This run was started at 10:30AM on Friday March 2. Run 21668 was the last run in which the VDCs looked OK. This run was started at 12:03AM On Friday March 2. The plots for this run can be found here. http://hallaweb.jlab.org/halog/log/html/1203_archive/120302124335.html Melissa and I also looked at the bubblers on the spectrometer and they were bubbling.