Balancing tip: With a Saito 120 on the nose, a hatch should be cut to allow placing the battery as far back in the tail as possible. I use a 5cell 6.0V battery and get a perfect balance with no additional wieght. A 4cell 4.8V in the same place makes it hair nose heavy. The RX can safely be attached to the trailing edge wing dowel. See pic below. I have since made it a little neater, but the basic placement is the same. Note the battery lead going into the fuse toward the tail.