Yes, unfortunately none of the suggestions have worked for me either, but thanks for the pointers
Do you have an older backup of this file?
Users/Library/Preferences
com.apple.print.custompresets.forprinter.SC_P5000Series_FCC63E__IP_.plist
It would have your printer instead of mine, of course. If you do, replace your current version of that file with the one from your backup and you should get whatever presets were setup when the backup was made.