Have the wing off the plane but have the aileron servo wire hooked up. Turn on the transmitter and receiver and then move the ailerons with your hand. It should be very easy to see what is loose in the linkage set-up. If it is the aileron torque rods a half assed fix is to put Vaseline on the torque rods so that glue won't stick to them and then put epoxy glue in the cavity. As the glue is drying keep moving the rods to make sure the glue don't stick to them. When the glue dries it should take out all of the slop in the torque rods. Then again try to move the ailerons with the wing off and the radio turned on.