It's not bad at all. Maybe a touch rich. If it's running good and doesn't top out or lay down on top end leave it alone. My losi with stock engine has a lighter tan color on plug. Don't get overwhelmed. In 4 years I might have turned high speed in 1/8 to 1/4 turn at max..... richened the low speed Maybe 1/8 . Watch some videos of 1/5 scales and listen to engines and watch how trucks perform. You will catch on to what a good tune sounds like. Unlike nitro which can be a day to day tuning, gas is usually consistent a doesn't need constant tuning. 95 % of time it's operator error or plug. My trucks hardly smoke so that's not always a telltale way of tuning. If you start twisting screws, make a reference mark and don't go more than a 1/4 TURN in or out. This way you won't get lost and with as many trucks/2 strokes I've had they are close from factory. Anything more than 1/4 turn to get in ball park would have me concerned about a problem elsewhere......plug, fuel lines ,etc. It's just nuts and bolts......Remember rule one of wrenching, if you are 50% smarter than what you're working on and 50% smarter than the tool , you can fix it !!!!!
