yeah the zener diode I have updated this on new ones I need to update the documentation I did it last week. its completely pointless.
initially I had it on the cv input, it took this long for me and a friend to realise it wasn’t on the cv input and on the signal input. proper nelson Mandela effect. and since its not needed on the cv input as it stands. been working perfectly fine you can ditch it. however it may explain my wonky signal which im not gunna complain about a bit of character, that stuff only adds to things. but yes the newest versions don t have these diodes and ill put an update on it right now as they can be a ball ache to find for something that serves no purpose!