I’ve been reading up on the progress hybrid, prior to installation. My experience has been with an older stove, and I want to get the hang of what to do with a new one One phrase that comes up often is “engage the cat’ By this I understand close the bypass damper to direct the flow through the catalytic converter.. Is that correct or does it mean something else ( like resetting the damper on the back of the stove)? The other thing I note is that to check to see if the cat is running or not, they check the stove and flue temperature. I get the idea, an active cat means a hot stove top.. but a better way would be the temperature differential into and out of the cat. Anyone do this on a PH?