Good advice from AMA,
The Bixler will balance right out of the box, mine came. With 5 whashers ( you see them on one of the pictures on top of the nose.) if you don't have them then you can balance it by using a 2200ma battery if you do then use a 1300ma battery to fly and balance it, I use both size of batteries, I remove the washers to fly with the 2200ma batteriies