AO2: 
Signal is noisy.  ~ 8-10 per meg instead of 2-4.
~ 20:00 noise = 6 per meg
20:00:35  Went to manual and back
~ 20:02 Played around with cal int, but left back at 30 as it had already started purging LS
20:11:33 noise = 3.8 at end of cal cycle
~ 20:12 to SA, lot's of exhaust smell in cabin - O2 spiking
20:14:30   Taxi roll
~ take-off, CO2 started reading 370 instead of 200, and came on scale for AEROS. .. . loose connection?
20:28  noise = 2.8 on SA!
~20:31-32 at cloud top at 29 kft, a few bumps
20:38 noise = 2.05 on HS !  (tfullloop = 3)
20:46:30 - 20:48 squirted CO2 around inlet fittings
20:48-20:48:30 squirted CO2 around filter fittings 
20:59  noise looks good, but shape not great - SPm  = 9, WTm = -13, mD = 22, totm = -1, 
~ 21:02 started 5 kft/min descent - check P cntrl?
21:07 Pcab = 606
21:18 Positive Gs
21:24 set cal int to 50 to get BL climb out
21:32:30 low over Ponca
21:33 Nice correspondence b/w AO2 and MEDUSA CO2 on +10 ppm Ponca plume
Inversion at around 5000 feet (3500 AGL)
Cabin pressure setting left on Auto-BJC (5260 ft) so cabin pressure went up on descent - didn't catch nadir so will have to look up post-flight
~ 22:05:30 found that AO2 was displaying a Cyl box USB error.  Cyl box lights were out, PaSP = 50, FlSP = 0, and O2 diff huge since 21:58.  Wiggled connector and about a minute later, the Cyl box lights came on and flow restarted. . . . USB error display won't clear (software prob), but looks OK.
21:10-21:11 - dropped out again - am pretty sure cyl box connector has not been bumped, though cable at other end may be affected by tray in/out
Noticed it happens exactly when leaning over and pressing the MEDUSA buttons
Happened again at 21:15:30 when switching MEDUSA - NOT touching cables!  Wiggling connector did not fix but plugging Cyl box usb connector into upper port brough back up.
AEROS and VNC fighting on screen

MED:
MEDUSA Plan
turn on pump after take-off, leave on low-alt setting all the way up
at alt, blow co2 around fittings
switch to high alt settings
test pos 1, 2, and 3 in both low and high settings
20:25:23  Pumps on 
P1, P2, and PBYP all tracked down with outside pressure until pump on - is this normal?  (both PCs in AUTO)
20:35  P1 = 140, P2 = 400, Pbypass = 825, Flow = 3301  (Pbypass high?)
20:43 at 41 kft, P1 has dropped
20:45:30 - 20:26:00 squirted CO2 around inlet fittings
20:50 at 41 kft  P1 = 130,  P2 = 399, P3 = 778, P4 = 3011 
~ 20:51 to high alt settings   
20:55  P1 = 90, P2 = 670, P3 = 778, P4 = 1695
20:56:50 to Pos 2
21:05 to Pos 3
21:10:30 to low alt settings
21:15:46 to Pos 2
21:22:30 to Pos 1
JUST realized Bypass has been on whole time!
21:33 Nice correspondence b/w AO2 and MEDUSA CO2 on +10 ppm Ponca plume
21:43:50 Bypass Off
21:53:54 to Pos 2
21:58:41 to Pos 3
21:04:07-21:04:15 - switched PC1 to close to double check that flask jumper was in place - flow dropped indicating that it is
22:10:26 to High Alt setting (still on Pos 3)
21:15:30 to Pos 2
21:19:35 to Pos 1
22:25 back to Low Alt settings (had to scroll through 4-9)
22:30:16 back to Bypass