Need tuning help on 340 (Part II)
This a NGK BPR5ES plug. Installed in #7 (rear cylinders run leaner and hotter) and I did two back to back runs (3/8m? part way through power band, shifted at about 4800)
Timing still at 22*/32*
Only when I hold it next to a new plug in full sun do I see a light haze (tannish?)