Funny, that is where I started. It spit out a P of 65 and I of 1.5. I played with I limits 50-100 no real change and it did work fine to heat and get it close....within .2 or .3 V......until I hit it with the propane then it starts ringing. lean to rich is okish, rich to lean rings every time. I redid the calcs with the new info, and it said like 20 and 0.3......which settles the ring but never gets hot enough to get it off the 5V limit...slope is 0 so it keeps thinking it ready to change direction and it sits pinned.
My hope right now is this was all a bad sensor issue and when I got out in a couple minutes and reset to the 2.5ish Vcal number, redo the above math all will be magically well