better batteries maybe 4200 dont need to be matched but ferals are cheap so
bearing weight loss etc etc look at droop better tires etc
if u all run 540 motors try running it in brasso for 30 sec then clean it with electrical cleaner/motor spray finally lube bushings and comm drops
do u make any mistakes? run wide spin etc etc??? be honest cause they will loose u more time than the best gear will make up.
dw man i still make heaps of errors and if u dont congrats ur a better driver