I have used light to make sure the pilot jets are not obstructed. I haven't yet had time to do a full teardown of the carbs due to being a student currently. I'm also waiting for some air filters to arrive because when I had the bike idling, it was without the airbox since it didn't have one when I bought it. I am going to see if the restricted air flow from filters might help the bike start rather than just the choke and the open air.