If I ditch the CCC carb, I'll also need to change the distributor, since this one has electronic advance. I'd just like to make it all work, as it should, for the time being, especially since I took the time to rebuild the thing. I'm an engineer, so making things work as they should has always been of great interest to me. The carb actually was plenty clean when I took it apart - nothing gummed up at all. It seems to run fine, it's just that it won't give me a dwell reading. I haven't taken it out for a drive since the rebuild, which was last fall, though. There's a specific troubleshooting section in the Service Manual for "Dwell fixed below 10*" which I am likely to follow and see. Where is the computer actually located?