Over hear guys just put a few drops of brasso on the com and run it for 2 mins then clean it and put a few more drops and run again for 2 mins.
The dip in water for a few minutes and spray out with motor spray and oil bushes.
After a few meets put on some brasso and run for a 1/2 mins and clean out with motor spray and lube bushes again.
My own motors i just run in a bowl of water with some dishwashing liquid for 5 mins.
The spray out with motor spray and lube bushes.
Slap in car and gear it 44 - 46mm roll out
casterracing EX-1 Pro, SP Silver Arrow
TOP Racing Scythe, SP 17.5, SP GT Pro 2.0
TOP Racing Scythe, SP 4.5 V2, Hobbywing Xerun 120SD 2.0
TOP Racing Scythe, SP 13.5, Hobbywing Xerun 120SD 2.0