K I would get use to the car before I would start worrying about lap times and so on.It may not be the motor or the batteries but how the car is setup and you getting use to sedan racing.
On the motor brushes do you replace them even if they arent worn out nor burnt?If so WHY are you doing this for club racing.That makes it very expensive.Like I said sometimes I will run the same brush for up to 3 cuts.It will depend on what brushes your running and how they wear(This will be different for EVERY driver due to driving style and how smooth they are).
The gearing on the Monster seems VERY HIGH.Expecially for a smaller track.You would actually drop 2 teeth below what a P2K2 is running at in that car when running a monster.
What brushes is Paradigm telling you to run?
What are you charging your 3300's at?
Im a offroader at heart myself.
Goodluck in the sedan scene.