I assume you wanna useSpirit Gov and not ESC Gov. So in Castle Link you need to select for vehicle type External Governor.
External Governor (from Castle Link Help)
External Governor is used when an external electronic system is being used to control the ESC throttle input in an attempt to maintain a specific RPM. From a stopped position, output power will slowly advance limited by 'Spool-Up Speed'. Once a steady rpm to throttle condition is detected, the ESC will give complete throttle control to the external system.......
Did you follow my Step by Step Explanation as proposed on your last topic?
http://www.spirit-system.com/phpBB3/vie ... 782#p13782If you don't want use Autorotation Bailout, just don't add the mixer part in your Transmitter (TX)
All the rest as described.
Let me know if you have any question with one of the steps, please reply direct on this topic (new reply), to keep things together.