No worries! I’m sorry as well. I’m glad you have been able to get it working!
Both the B407 and H125 aren’t set up correctly to use the throttle axis. You’re previous solution with the 10%-90% as a button press is the best way to handle that as mapped to a hardware control for now. They are both an on/off, idle/flight thing.
the startup behavior of the B407 needs work.
edit:
…and if you have a hardware button for the idle release button, it can either be ‘CUT HELICOPTER THROTTLE’ or ‘THROTTLE 1 CUT’ depending on how the developer set it up. Then you should be able to roll the throttle past the idle release stop