Get an inline spark checking tool they are extremely cheap on eBay couple dollars a piece. By at least two of them but 4 would be better. Hook them all up to your spark plugs and crank the bike you will know right away whether it is your coils or not. The spark checking tools will flash if they...
Check to make sure that the choke cable is actually moving the choke lever. I have seen those broken or disconnected. The choke lever in the bars may seem like it's doing its job even though it's not actually operating the choke.
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Hi there I'm new here but I had the same issue so I wanted to chime in and see if I can help you out. I serviced my ex up valve about a month ago and I broke two bolts off flush as well just like you. I was able to drill them out but I broke off an easy out inside the one bolt trying to get it...