Does FMS realy use Throttle an Pitchcurves for Pitch Models?

[Dragon_Crusher]

Hi there,

I´m relatively new to FMS and started with building a Robbe Spirit M8 lately.

I wanted to practice a little with FMS before starting my new toy in reality but I experienced some problems.

I own the Graupner MX 12 transmitter and hooked it up with the MFTech interface. Flying works fine with 4 Channel models but when, I load a Robbe Spirit M8 in FMS and change to the profile in the transmitter flying with FMS gets impossible.
I can see the channels from the transmitter change the way it is programmed for a 120° swashplate but the model in FMS reacts stupid.

Question:
Is FMS using the whole throttle and pitchcurve thing ?
If so how do I need to change the mapping of the channels ?
If not, are all pitch heli flyable with a simple 4-channel transmitter ?

Thanks in advance for every helpful tip.

Michael