Thermoquad on 340 (plug photos)

How do these look? Timing at 20/32...

Still no color, and no fuel ring at the base of the porcelain. A/F #'s very good on the meter. 15 miles of spirited driving, shouldn't I see something on the plug base or at base of porcelain?

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Is that an NGK plug? Can you see a fuel ring down in the bottom yet? Remind me what ignition you have?