nothing really for that motor you already did the cup thing... and comm drop which would have been my recomendation the only thing now is to make sure that comm stays clean and shiny... get a comm stick and try to keep her clean... another thing to try to get other motors and try doing the same methods on them (cup, drops and clean) so that each qual or main its a freash motor.
another thing you might want to try is your cells... what do you currently use? also what ESC do you have? you might get an extra kick or effecnt out of a better esc.
Thus far I would keep your setup honestly cause you're killing the crowd as it is you're the top 10 of 30 which what the 80% better then the rest...
Keep up the good work! and keep us updated