I have a Hitec Eclipse which is similar.

I set the SWASH Setting for
CH1 and 2 to 50% this limits the travel, you can increase if you need more cyclic
CH6 to 65% this depends on the desired pitch range, increase if you need more or decrease if you want less.

Keep in mind that the setting can be -/+ depending on how you have your servo installed.

I have some EXPO set to tame my 450sa down some.
CH 1, 2 and 4 set to -20, the higher the number the less sensitive it is around center.

Remember my setting should just be a starting point, you will need to play with the numbers up down for your desired flight style.