I bought my Wing from the original owner in June of last year. I have had 2 great trips that clocked around 450 miles. The last time I had her out was Christmas Eve and she rode perfect.2 weeks ago I started her up and found that the 2 rear cylinders were not firing. I haven't sent out the call for help yet butI have tested the spark igniters by switching the connectors. But when I pulled the #4 wire while she was idling there was no change. The spark did not move from the front to the rear as may indicate a bad igniter. So at this point I have the coils off the bike and am trying to teach myself how to use a multimeter to see if I have a bad coil as suggested by some riders. Thanks for asking!