my upgraded micro has been hitting 10,800 regularly at our track with a pretty long back straight. Don’t worry about what the jetting should be. Follow the signs in the tune. What you described makes it seem lean. Read the pipe. I have found the Evo, while finicky, to be very predictable and it behaves logically the way that you would expect a 2t to tune. The old carb seemed quite counter intuitive to me relative to past 2t engines I tuned.