Well, then the next thing i would do is test the integrity of of the wiring harness. It's unlikely, but not impossible, that a wire in the harness has failed, and that failure is causing lack of spark.
I had an old bmw where the wire INSIDE the insulation failed, and it would lose spark very intermittently. i had to check continuity in every wire, while moving the wiring harness. crazy.
Did you also replace your timing pickup, or test it for continuity/resistance? Without that signal, your CDI won't know when to spark.
I think this has been covered, but remove ALL ground leads, polish them and their mating surfaces, and reattach. I've chased bad grounds before.
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