Rough pump down was faster than normal.  Implies that the majority of the gas load comes from the O-ring sealed QF flex lines that connect the scroll pump assembly to the HAM6 connection as these were pumped overnight.  Typically, these get pumped simultaneous with HAM6.  In other words, it seems that the time needed to rough pump HAM6 down to the point of switching over to the turbo pump is significantly determined by how wet the connecting flex lines are.  We have always suspected this but never realized to what degree.