If anything, I'd say it's running too lean.............It's everyone to their own with regards nitro v brushless, but I personally, could never be tempted away from nitro.......I love the noise, the smell & above all, the challenge of getting it running right....I'm lucky though, as I've had the same car for 20 years now with the original engine still on it (although I have a spare one too), so I know every nut & bolt on the car & also enjoy stripping it down & rebuilding it...........keep at it.........it's worth it.