Well Chobro. You might have to start another thread because this one is really veeeery long. And you can't have the same things happening, can you? Stumbles at speed? They were working on carb float level when it died so maybe that means that was it? Check carb float levels. Points ignition can have high speed misses from too little dwell. The points set too wide do not stay together (dwell) long enough at higher speed. What do your plugs look like?