oh jes, the Transmitter is a very importend when you use a Flight Contoler !
Becaus the Flight contorlers usualy need a Signal from -100 % up to + 100 % Way on the Gas ! If you dont have a Transmitter were you can prog. or adjust this way you might get a Problem ! I use a FUTABA 3PK and this works pretty good !
Before I had a older Futaba Transmitter and there I modified the Gas way on a mechanikal side in the Transmitter to use all, even the cheap Flight controlers !
Some flight Controlers dont need this Signal, they "learn" the Way from Break to full throttle when you start them !
i know some guys working on a very good and not to expencive High Voltage Controler with this features :-) !

BRGS Stefan