Drain, if you use the traxxas servo make sure to loosen the servo saver a bunch..There are a bunch of cheapo type servos that perform exceptionally well, if your on a tight budget..Some snobishly dismiss them just b/c there made and designed overseas, but you cant dissmiss there value. Plenty run them with sucess and you can buy them for $12-$25 bucks roughly on websites like; Hobbypartz.com or Hobbyking.com..
Ps. Sorry for your loss