Yeah, maybe start out really simple by just disconnecting the PCV and put in a fresh set of plugs, forget the carb switch for now. That's a lot of
oil going somewhere and, if you're really lucky, you've just got a big glob of it coming in the base of the carb through the PCV, then it hits the plugs, causes a misfire, then it burns it all off, scares the people behind you that you're on fire or something, and then it runs good for a while before it does it again. Maybe.
