CP8 typically overfills following a delivery of LN2 (but it shouldn't) -> The PID response seems normal and should prevent the pump from overfilling yet the pump overfills anyway -> Today I discovered that the removal of the instrument air supplying the LLCV resulted in a noticeable stroke (closed) of the needle even though the PID output was for 0% open -> Thus, the valve wasn't closed when it was 0% open -> I will need to review the zero and span adjustment procedure and adjust this such that the needle is closed for the 0% open PID output