Appreciate some input on spark plug reading

One of the pics looks like there is peppering on the porcelain. Might just be the pic. What fuel do you run? Definitely cut the shell off a plug and look at the fuel ring. Should be about .100-.110 up from the base. And your timing looks 2-3 degrees soft for what I would consider optimal. You want the ground strap tanned almost all the way to the thread if you’re running it on the edge. Most don’t like doing that though.