Please @340inabbody post your timing map if you can. If I saw that plug I start by pulling 6-8 degrees from 1500-4000 on the map at all loads and tune back to it. There is something weird going on in your chamber (have you verified TDC on the balancer?) and I’d be overly safe to start tuning. Also, that plug shows your fuel ring is much too wide so after you get the timing situation figured out, you could strip some WOT fuel out of it.