Check the fuel flow by removing the big screw on the bottom of the carb. Have a pan ready and open the shut off. You should get a thick, steady stream. If not, you have a blockage somewhere upstream of the carb.
As for the wire check: checking the sparkplug wires is always a good thing, but that's not what could be your problem here. I was referring to those skinny little wires that go onto the two nutted connections of your coil. Sometimes you can make a broken or frayed woven wire fail on demand by wiggling them around. The last time I had this happen, the last strand of wire failed when I wiggled, and the wire broke completely off. One of the best ways to test would be to put on temporary jumper wires and try it.