Any chance somebody wants some money to look at a few of my DIY modules and help me troubleshoot them? Namely two pulse VCOs that are super-quiet in comparison to their other wave outputs, a VCF which does nothing, and a quad VCA that’s shorting somewhere. I’ve taken them as far as I can with my utterly amateur skills with a multimeter and scope and my non-existent skills reading a schematic. No rush, just let me compensate you for your time. I’ll pay shipping to and from.