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Re: Spark Plug reading
Your #1 plug looks perfect, the #3 is a tic lean...I've been reading plugs for almost 50 years now and is paramount if you raced and still ride the KZ-1000 Z1's...Try a WOT plug chop test by turning off the ignition at cruise speed and rolling to a stop in neutral...Those plugs don't look bad enough to melt holes in pistons...
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Michael of the clan Hill,
"Two Seventy Two's"
71 1-ton Dually 350 4-Speed
71 C/50 Grain Truck, 350 Split-Axle 4-Speed
02 3/4 ton Express
14 Indian Chief Vintage
1952 Ford 8N, "Only Ford Allowed On The Property" 
"Be American, Buy American" 
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