I still haven't dealt with http://bolocam.blogspot.com/2011/07/additional-problems.html, or essentiall any of http://bolocam.blogspot.com/2011/07/minor-ongoing-problems.html. However, they're probably related to this problem: % CLEAN_ITER_STRUCT: There were 1 bolometers with high weights: 13.5047 indices: 142 or flagged indices 142 which indicates that in a simulation in which there can be no outliers (in terms of weight/scale), there is one being rejected as an outlier. That indicates that weights are being computed incorrectly, despite the fact that scales look right (so far): Relsens calibration: Scaled to bolometer # 0% RELSENS_CAL_PCA: There were 0 NAN scales and 0 very low scales% RELSENS_CAL_PCA: Scale Median/Mad: 1.0005510+/- 0.010990833 led to 0 scales set to zero for a total of 0 bad bolos% RELSENS_CAL_PCA: Scales avg+/-std = 1.0007304355062783+/- 0.0103252880998329Relsens calibration: Scaled to bolometer # 0% RELSENS_CAL_PCA: There were 0 NAN scales and 0 very low scales% RELSENS_CAL_PCA: Scale Median/Mad: 0.99955294+/- 0.0093122063 led to 0 scales set to zero for a total of 0 bad bolos% RELSENS_CAL_PCA: Scales avg+/-std = 0.9990063123041220+/- 0.0096663438876613