The answer is very complicated but I will try and answer. See on the second full moon of each lunar cycle when the temperature is in the mid range the mini gnomes come out. They usually inspect your mini to make sure all is in order. See the problem is that this takes a long time. By the time they get to the coil pack they need to relieve themselves. They do this on the coil pack to see if it is getting fire, and as you know the #3 connector does not put out as much power so they use that one. So gnomes forget to clean it off there by causing rust. Now you know