Did you just lower the knock rate?
LOL there is a lot less KR now.
I was wondering if the KR sensors were bad.
That #7 plug is discolored because of how lean you were running overall.
#7 is know to be leaner than the rest,
it tends to be the one that gets BBQ'd.
If you have the stock pistons still be thankful #7 didn't disintegrate.
On a side note I feel that tracking {B5913}/{B5914} with
DYNCYLAIR_DMA is better than using DYNCYLAIR or CALC_CYLAIR.