Mine quite like that once, and it was the stator. Replaced with Ricky 200watt less than $200 now i think. Ran good for years.
Then i was alos playing with timeing and an RZ flywheel, and i also did something, dont know what, but i lost spark. This was just a few months ago. I was building a stroker motor anyway, but I found out that up untill 96 there where more electrical issues with the banshees than 97 and up. CDI mainly i am told by the builder that built my 4mil. Anyway he will sell the late model electrical system for $200 everything except stator. (CDI, harness, switches, etc.) and will swap plugs on your stator for ya if you send it to him and will run it up to make sure everything works. Seemed like the fastest and easiest way to solve my problem.
Should be on the way back to me know.
Let me know if you want to contact him. Said he keeps alot of em on hand.