Servo Endpoints and solid LED light on BeastX?

[plofstof]

I am setting up my first helicopter (T-Rex 470) using the BeastX. My transmitter is a Futaba 14SG and I have the BeastX connected using the SBus2 port (single wire)

I have completed almost all steps of the setup process successfully but one thing bothers me.
In Setup Menu point F (rudder direction) the BeastX guide says as "optional" that the LED should be solid (not flash) when either endpoint is reached on the transmitter stock throw. And that if this is not the case you should adjust the servo endpoints on the transmitter until you do get a solid LED.
The same applies to Setup Menu point L (collective pitch) where the LED must again become solid the moment you reach the endpoint on the transmitter's pitch channel.

In most cases I fail to get the solid LED. I have adjusted the endpoint settings on the Futaba but this does not help either. The Futaba endpoint defaults to 135% and can be adjusted further to 155%. Adjusting my endpoint int he above two cases to the maximum (155%) does not solve the problem (yet). Sometimes I need to add a few notches of trim on top of that before I get the solid LED, but that is obviously not a solution.

But I do not think settings above 100% has any bearing on the SBus(/2) communication, as I guess a digital percentage is communicated over the serial communication in this case.

Does anyone have any suggestions on how to get the solid light? Should I rather ditch the SBus and do a Standard Receiver setup with multiple wires? (I hope not)? Or is there some obscure setting perhaps in StudioX that I could turn to?

Thanks!