Ok, that's equal to a 9 in a Champion. That is a street plug.
At that CR and that gasoline, your plug should be a racing plug and not a street plug. In a Champion that would be a C63YC. I don't know NGK numbers but the equivalent to that in an NGK is ok.
You have to start with the correct heat range plug. That is way too hot. Fix that first. And then start over. It's no wonder pulling fuel out of it pissed it off so bad. You are using fuel to cool the plug.