Did a little digging...
According to professional images, the SII signal (which I failed to detect in my feeble attempt) is there.
You have done very well to get any signal....Kudos to you Chris
But the signal is *extremely* weak compared to the Ha and OIII. Hence as Bill suggested, it should not contribute much to a NB rendition.
But, sure, while you can alter the relative intensities....the question then becomes: what are you showing by doing so?
If doing so reveals a structure at a particular location, then great.
If it makes something that normally looks red, but you can make it look orange.....the, meh....maybe not
