So I just rebuilt the twin 700 and it ran great. I put all the plastics back on and have been doing test runs. It was running fine and all of a sudden it died. It started right back up and stumbled a couple time before it died again. I got it to run long enough to park in and now there is no spark at all. I know of the ignition upgrade but I wonder if it could be something other than that before dump more money into it. I seen where some people did the upgrade and found out it was not the problem, 700 dollars later.