As far as the code is concerned, if the hardware lines up with the detent, which is indicated in the 2D pop up by the text "START", you should have no problem doing an engine start. The actual detent, which can be used with the mouse, is a separate dataref, and cannot be bound to hardware. However, I refer to my original statement. As long as the hardware lines up with the START position, the engines should start. See images below...
CL levers, indicated by the yellow lines are at START, which is indicated in blue (at the top of the CL range)...
This will give you an engine start.
This image shows the CL's at FEATHER. If the engines are not running, and you want to start, they will not start if the CL's are in this position...