I think that pretty much depends what engine you put in it, where you end up with your battery. Mine was tail heavy with an OS46FX in it. I put the battery (1100mah) forward under the tank shelf, and only had to add 1/2 oz on the nose. I did this by expoxying 1/4 oz on each of the motor mounts at the very front of it on the underneath side. Make sure to laterally balance it as well.