confused mmmm I see you have rebuilt the carby....When it dies whip the plug and see if it is wet or dry. My thinking is along the lines of a dodgy float level or sticky needle & seat...as soon as you move it it dies; suggesting fuel level?

Another good way to check the spark is with one of those cheap in line timing lights....(or a expensive inductive one if you have a 12V battery handy) these faults do tend to send a sane man a little crazy....


"Quality is remembered long after the price is forgotten"