Hey guys, I pulled my plugs after a full wide open run held to the bars for like 1 minute. The nose (porcelin) part is a darker color, but the ground electrode was grey/whiteish. When you read these anti fouling type plugs, where should you look? The ground electrode makes me think its running lean, but the rest of the plug looks like its on the rich side. The sled is a 600 F6 EFI. Thanks guys.