When you enter a project page, please read through it all. I know I can be long winded, but there are notes in there which I hope will answer your questions, like why do I have an SSM2210 in the VCF? Do I really need to match transistors? How do I match transistors? Which of the 5 billion different ceramic capacitors choices should I pick (well, there is no answer to this except pick one of the 5 billion which fits the holes...)
Read the General Component Notes page and read the Power Regulation page.
Email me with questions and I'll try to help. You can also post questions/comments on the Electro-Music Synthasystem forum HERE.