I know what you´re talking about.
supercross feels almost like a different game to me.
in case u did not use the clutch yet, u should start using it now.
And start off with easy tracks like jefferson or west stone gardens.
The hardest ones are columbus and ESPECIALLY bridgeport.
I think I went more than 250 laps on bridgeport, until I finally got 1.18.77 last night....