2:20 pm local Took 90 sec. to overfill CP3 by doubling the LLCV setting to 34% open rather than cracking the bypass valve. I am dissatisfied with the TC readings. Temps never registered below 0degC. But there is still a decent delta. On Monday I'll fill the same way and allow LN2 to exhaust a little longer to see if the TCs eventually read appropriate temps.
I wonder if there is heat trace working on CP3 but not on CP4?