There are screws on the bottom of the bowls. Unscrew them and see if fuel comes out of each one. You need to make sure you are getting proper air, fuel and spark. That's really all there is to the banshee. The CDI and coil seldom fail, however there are other issues like failed stator, sheered off woodruff key and loose fly wheel that can cause spark/starting issues. Is it backfiring at all?