How to Tell Real from Ghost KR on LNF?

Hey! Still working on getting rid of the apparently common KR on the LNF (Redline/GXP) at light load 30-100 (0-215 scale), low rpm 1500-3000. I've read through every thread on here I could find on the subject and tried many. Thought I had it solved, then did a log on some steeper hills and it was back.

Front sensor (1+2) is clocked at 9. I can't see the rear one from under or above the engine. It's so dense with stuff, I don't see how anyone was able to get in there and move those sensors around at all. I couldn't even get my hand in there to feel for the rear sensor position.

Anyway, I added Cylinder logging to get a better idea of what was going on. Turns out almost all of my knock is being reported on #2 only. Usually around 1.5, but occasionally hitting 3.7. Is this real or ghost? I would think real knock would show up on some of the other cylinders at the same time, if it was fueling or timing. Usually though it is just #2.

Super low mileage car with no issues, so I can't see it being a bad plug or carbon build up. However, I will probably pull the plug just to be sure. 91 octane only here with no E around.

Any input appreciated. Thanks!