[greencactus3]

i think the easiest, safest way is to replace the drill motors with something with a more slower freespeed. unless you are gearing it down waaaaaay low already, it will go fast... cuz its either full throttle or no throttle. not too good for the motors either... wear down the comm and brushes quick. well, using les voltage would also help in your case. wont use the motor to its full potential but its doable. slower, easier to control, less heat, etc