Disconnect the cable from the brain box and make sure there isn't any tiny foreign matter (grains of sand, stray moisture, evil voodoo rays, etc.) mucking up the connection between the pin and the box. Blow on the coil connector and then gently rap it against your knee, and maybe even use a magnifier of some sort to make sure the pins are clean. Then take the brain box and ***gently*** pop it against the palm of your hand to see if there's any tiny foreign matter stuck in the holes. Then reconnect tightly and then test to see if you're getting any falsing.
If you aren't and this seems to have taken care of the problem, you might want to cover the part where the coil-brain box connector join with a length of electrical tape to ensure that the little stuff stays out. If you are getting the same falsing, then it would be wisest to send it to the factory for service.
Scott