I had numerous issues with the Nord 500 - gauges not working properly, odd collective response, no fuel consumption - which were all alleviated by changing the engine type from 5 (turboprop) to 3 (heli turbine). But in doing so I lost all engine sounds. Since this aircraft uses a single turbine to drive two ducted fans, another helicopter sound wouldn't be accurate due to rotor sounds. So, what do I now edit to get the new engine to use the old sounds?
Tried using FS Sound Editor to create a new set from the original files but it aborted, complaining of no startup sounds. Also considered using the sound.cfg from a helicopter and just changing the file names it calls; but from experience I know that can be a can of worms if everything doesn't blend properly. Or I could create a new sound set from scratch, but that's a bit of work when it seems there should be a simple flag to set somewhere.