Move the camera in the cockpit using the arrow keys, so you’re looking at the panel.
Get more comfortable with slewing/moving the camera. Of course it’s impractical to use the fuel panel from the left seat; that’s like trying to change thermostat from the couch without getting up.
So I got it to work!
What I did was merge the CRJ and MCP Combo templates and then change the key down event from the MCP Combo to the CRJ script one.
Now all rotaries are working perfectly in my MCP Combo!
If someone wants my CRJ template send me a PM.