Also bear in mind that the rotor disc(S) is like a gyroscope--it won't respond in the direction you push it, but at some angle from there. On most CP helicopters with a flybar, the swashplate flys the flybar, and the flybar's input to the rotor disk is 90 degrees away from where you might expect it to be.
Also in the CX/CX2 the transmitter mixes the inputs to the two servos to give the correct swash motion depending on what the pilot is telling the helicopter to do.
As long as it flies in the direction you are pointing it, don't worry.