This is my first serious post here, although I have often dipped in to search for synth related info.
If there are any Peavey Spectrum Synth users on the forum I am making a software editor.
It is in a very early Beta stage that offers simple parameter changes, if you would like to try it out it can be found here:
Peavey Spectrum Synth Editor

It is being constructed using Atom’s brilliant Ctrlr software, so if you are new to this you will need to download it too.