This afternoon I ramped CP4's LLCV in 5% increments every 2 minutes, from 39% to 88% open, from 88% full to 100% full, for more data from exhaust flow meter. 

Fill level SP has been reset to 92% and level is slowly coming back down at 20% open on LLCV.

Kudos to Patrick for writing an effective PI-code. It works very well for overfill scenarios!