That plug looks good to me. I like to see a very light tan color on the bottom of the porcelain and the burn on the ground strap at the bend. I'm not an expert at reading plugs by any stretch reading spark plugs. I just know what I like naturally for my NA motors. If the car is repeating, that's the important thing. When my racepak O-2's read 13-1-13.4, my engines are the happiest. I know they do vary though. I almost wonder if you're driving through the converter or something like that as the RPM seems high but can't see it at the top of the run. BTW where are you taking the O2 reading? It should be taken at the finish line at maximum RPM. As far as leak down numbers, it does seem a bit excessive. On the video, it looks like the plug is oil soaked? Is that just the light or? Is there a reason you are not using E85 or Methanol instead of gas? Just curious. There are more experienced people on this board than me especially on blown motors.