I really feel for you. This is so frustrating!
The fact that it ran for 10 mins, cut out and won't restart points towards something, breaking, sticking, blocking, shorting or vibrating lose etc....
Have you had the rocker cover off? It is very unlikely that the timing chain has slipped a tooth ot two, but you never know.
Have you someone who can rotate the dizzy left/right while you're cranking over just to see if you get the slightest flutter on easystart?
