RE: Fly Helis with 9CAP ?
The heli version too has a "ratchet", so to speak, in the TX. Unlike the airplane version, whose ratchet has an indent on it to catch the teeth on the gimble assembly, the heli version is smooth and only presses on the teeth to provide some resistance to movement of the stick. If you remove the ratchet in the airplane TX, you'll have to replace it with a smooth one, otherwise the stick will feel loose.
The ratcheted action in the airplane TX is mostly there to prevent movement in the throttle channel when you move the stick side to side.