Place your finger in front of and against the rear cabane mount where it bolts to the top wing. Your plane should balance there. I had one of these planes for four years. Very nice flyer and looks great in the air also. Make sure you have strong servos in the wings. I had flutter on my first flight due to a weak servo that failed. The plane survived and I upgraded to JR 2741s and had no more issues in four seasons of flying. I sold mine, still in excellent condition. I had a Saito 180 in it. Knife edge loops with no problems. You can see pictures of it in my gallery.