Originally Posted by Kioshk
For what it's worth, it only takes a couple of minutes for these engines to get to working temperature. WOT in your case is probably just pushing the engine to its limit; you say you have a nice chocolatey-brown plug, that's good...you're in the zone. These engines are relatively delicate and cheap, they need listening to, and you've heard yours telling you "LAY OFF THE THROTTLE!".
Too bad Dandy Brandi will never smarten up and use good given advice as above ay Cylon!