I had exactly the same problem as David explained this past summer with my Panhead. I was several hundred miles from home and I double checked the whole timing routine, etc,etc... The bike was in stubborn mode when it came to starting. It was narrowed down to the coil but it periodically had enough life in it to get me home. In fact the ol' sickle ran pretty good most of the way. It wasn't until I was about 5 miles from my place that it started to cut out again. I cussed the re-pop coil and will be going a different route coil wise next year.