the esm beaver is a piece of junk. you would not believe what i had to go through to get were am at with plane. push rod tubes had to be replaced and push rods were the size you wood put in your park flyer. the wings tube they give you is to short eight inches. and they whont you to use rubber bands to hold the wings together to keep them from sliding off. it takes three pounds of lead in the nose with a dle-30 to balance the plane. the plane is poorly deisighned.if any body can build this plane by the instructions GOOD LUCK TO YOU?