Different swahsplate values using traditional heli vs previous firmware release (AC 3.3.3)

Upgrading my trade heli firmware from previous version (AC 3.3.3) to this one (AC 3.4.4), the swahsplate movement has changed. The values are the same on both firmwares, but movement are significantly different. For example, Zero position of swash with 1470 value on both firmwares, gives me a blade angle of 0º on AC 3.3.3 and 6º with AC 3.4.4.
Max and Mind positions with new firmware take servos beyond his limits.
¿any one has this or similar problem?