I'm excited to correct this on the preamps I've built. They work fine for me, but I let my friend borrow one and he popped it into an API console at the studio he was tracking in, he said it would ring at really high gain. I couldn't duplicate the problem in my studio, so I never got to figure out what was happening.
Glad to finally have some closure. I've thought about going back to this project and revamping the layout, simplifying and shortening some of the nets, cleaning it up a bit and adding more features or maybe small addon boards like signal and clip leds, filters, etc.