Forgot to mention that this is my best engine on fuel. Lost Creek is the worse fuel mileage track we run on and after topping off, running 45 more seconds then running a 6 min qual plus another lap before i brought it in it was barely under the tank seem in a losi truggy. I believe we were the only truggy to pit only once in a 20 min main. We pitted at around 10:30 into the race, raced the next 9:30 and the fuel level was halfway between the fuel line inlet and the tank seam. I can see this thing on a small bullring track going 15 min in a truggy. The track conditions were awesome, zero dust and massive traction. I probably only ran on a track with that much traction 5 times. I'm mentioning this in reference to clutch setup. It was suggested i run a certain setup but i'm sponsored by answer and that's just that, but i really liked how my clutck worked for my driving under those conditions. If you run on a really tight high bite track put an aggresive clutch on this engine as Neal suggests. I can go slightly more aggresive with my setup by using losi silver springs instead of answers silvers, but doubt i will. I was told the M2C setup with the addable set screws is the ticket and will use one if i see fit but for now i don't want anymore clutch.