I have not heard of a P2 with a fisher cable predator unless it's a secondary. Is it in addition to your primary?
The P2 is a very capable rebreather. The WOB is outstanding and it is very intuitive to use.
My experience dealing with Hollis support has been excellent
Ok this is my bad. I had someone refer to the cable between the predator and the head as a fisher cable. The cable is the original manufacturer installed cable. Not sure what constitutes a fisher cable but your post indicates it is not one.