My kids ZX6 is doing the same thing. we changed the carbs and it ran good for a week then started dying when hot, so we changed the coils, now same thing, starts right up then slowly starts to chug and dies and will not start again. Let it sit for some time it fires again, my only option is pulling the carbs or the igniter is screwed but it fires right up idles for a short time chugs and dies. AT a loss here. sounds like yours is similar maybe the igniter?
fahza fahza can you heeeaar me!