(Jordan V., Gerardo M.)
Late entry.  The plan was to go and take an RGA scan "pre-vent" from HAM8.
OnTuesday after lunch, we went to the filter cavity end station to power ON the RGA located on HAM8, the system has an active ion pump to maintain the RGA volume under vacuum, upon initial inspection all appeared nominal, the ion pump controller showed an internal pressure in the volume of the RGA system of mid 10^-07 Torr.  We attempted to pump down the RGA system with an aux cart+can turbo combo, however once at nominal vacuum pressure the safety interlock for the aux cart would not engage, we stopped and left it be until the following day.
Second try on Wednesday, we diagnosed the aux cart, and for our luck it turned out to be a disconnected wire, with the wire connected the aux cart safety interlock was working.  Then the RGA system was pumped down, once at nominal pressure the RGA filament was turned on.
Late Wednesday, a scan was taken of the RGA system alone, the scan had two prominent peaks that should not be there under the current condition, the peaks were for argon and krypton..
After some detective work, we determined that we have a leak on the isolation valve for the calibrated leak mounted on the RGA system! 

Since taking the scan, the aux cart has been pumping down on the RGA system, we are trying to eliminate as much of the gases as possible, keeping fingers crossed it works, otherwise we'll need to bake the system to clean it up.  More to come for this RGA.