Hello! I am back after a long hiatus and my senton mega 550 brushed v2 (not v3, even though that came out literally a few days after I bought my v2) has been sitting unused as I have been having some problems with it that have included the gears from the motor to the driveshaft braking, and also the motor itself grounding its own bearing. I feel like the best solution is to just get a better esc and motor, and I have been eying the Firma 85a brushless smart esc along with a 4000kv spektrum sensorless motor. Would this be the proper motor/esc combo to upgrade with? I also presume that I would have to install a center drivetrain brace along the chassis, where could I buy one of those? And also what would it make sense to replace my current gears for the motor and drivetrain respectively? As the plastic one for the chassis is already broken, I presume I should invest in a metal one, and would the current gear that works with the brushless motor work with the brushed one? I really have not that much experience with upgrading these, so every bit of help is appreciated! Thanks!