Well, a quick update. Got it all back together using new bits from CB and had the car running in time for the Great Canadian Volkswagen show. When I first assembled it, it sounded like I had an exhaust leak. Small pop at idle. Swapped out the gaskets, and took it to the show. For the most part, it runs great. But I get a pop like a plugged idle jet *just* when the butterflies are opened ever so slightly. So, if you're coasting off throttle, and add just a hair of throttle, it will pop. But not always. Maddening, but I haven't been able to figure out if it's timing, fuel or a simple exhaust leak. Some of the pops will show a flame out the tailpipes at night, but not all of them. Always fun.
-Dave