Appreciate some input on spark plug reading

Newbomb Turk said
I’ve been pulling fuel from a BBC for 18 pulls.
The plugs started out black and now they are nice and clean and white with a pretty dry shell.

And guess what??? It’s making more power.

You've done 18 pulls and now all of a sudden you're an expert?

Image how much more power it will make when you you get the cylinder pressure up high enough to tan the plugs......