I have ran a tank through it so far. I have been using my Fluke infrared thermometer to check temps at the glow plug. This is correct right? What should the optimal temp be? If too high, I should richen it?
You want to run that thing FAT AS HELL on the first two tanks. As they said, don't touch the needles, leave them at factory. That should be 2.75 on the top, and flush if not a little proud on the bottom. 220º is the max I would run that engine at, but if you hit that during break in, you are going to destroy the engine within a couple gallons max. No higher than 170 I would say during break in. It will be pouring fuel out of the exhaust and this is a good thing.
The first couple of tanks, if I remember right from Traxxas, you just putt around at less than half throttle. I used to idle all of my engines for a tank or two with the wheels off the ground, just barely running, and I still do that on nitro cars. But they want you to do it another way. If you follow their way, it has a warranty.
I guess they changed them over the years lol. Have not played with a new one. Couldn't remember the settings. As for the low needle, as long as it is unscrewed from flush, you are fine.