So what we have here is a failureto communicate somewhere. I have rode for years but never worked on these myself. The issue i am having is almost like a dead cylinder. This is a 2004 vtx1300. As far as i know everything is still factory. I took it to Rock Hill Powersports in SC and after 3 months and $1000 its still the same. I can pull the front right plug wire loose and increase the spark jump which seems to smooth out the engine. Where do we start to figure this out? Remember i am new at working on bikes.. Im a diesel mechanic.