Hi all, you will find in http://www.slac.stanford.edu/~sacco/efficiency/eff.html an update on non-resonant signal efficiency calculation with CM2 and CM1. Please have a look and let me know your comments. In addition, I realised that in the numbers that I provided and Virginia showed in http://www.slac.stanford.edu/~azzolini/reweigh.html, the labels (CM1, CM2) of table 1-A (non-resonant signal efficiency with CM1 and CM2) have been inverted (mea culpa). Efficiencies are, in fact, consistently lower in CM2 than in CM1. All the best, Roberto PS: as Virginia, Concezio and myself are traveling to SLAC on Tuesday 15th, would it be possible to move our meeting to, say, the next day?