I realized that there isn't an explict alog about this because Paul was asking, so I'm adding this trend to show that after the OFI repair our optical gain is better by about 2.1%, implying that the optical losses are reduced by 4.3%.  While the OM2 heaters is now off and was on before the vent, that didn't have a large impact on optical gain last time that we changed it in late June.