I have grown to accept that comm drops are essential for me to properly break in a motor per the directions provided above by Trinity.
I used to race Spec Slash and it was a YUGE advantage for the handful of guys who were using comm drops. Eventually everyone was using comm drops where...
Comm drops are designed to be placed directly on the commutator and will soak into brushes, I only use this product here:
https://www.teamtrinity.com/trinity-black-death-power-comm-drops-4052.html