CP5 has a couple features that are unique to the other CPs:

1. The Dewar exhaust pressure regulator was adjusted to raise the Dewar pressure from 15 psig to 19 psig (one turn on regulator bolt head).
2. The upper end of the electronic actuator was "zeroed" at full range of device rather than where it landed when CP5 was set to 100% open. 

We added the range and increased Dewar pressure because in order to maintain 92% full the LLCV setting was historically around 88% but has drifted to 98-100%.