Unfortunately, it looks like my initial excitement may have been a bit premature. The bike started easily, usually first or second kick, but she was running very rough with less power than I seem to remember. (It's been 27 years so memory might be an issue). Some diagnostic work indicated that the left cylinder is not firing as well as the right. Left exhaust pipe is much cooler than the right. Right plug is a nice light grey color, left plug is coated in dry black soot material which I believe means that cyclinder is running too rich. Carbs have been checked and adjusted, new plugs and plug wires have been installed. Compression is good on both cylinders. Spark across the right plug is strong but spark across left plug is present but barely. Coils have been checked and are at specified resistance. Wires to left and right condensers were switched with no effect: left cyclinder still had weak spark. I suspect an electrical problem (it has been suggested that it might be a valve issue but I'm really hoping not). One of the connections to the left condenser is showing some corrosion, the others are fine. I'm not sure if that corrosion is enough to cause a serious reduction in spark at the plug. Connector will be replaced. Does anyone have any other ideas?