The very fine delicate wires that came with the PA was a bit of a put off for me,especially since it was going on a bike not known for it's smoothness.And also it had this knack of letting go with errant sparks sometimes,like when the piston was half way up the compression stroke.Scary
,someone said it could be the way they trigger,something about light ???getting in the housing somehow
Cheap twin plug coils,VFR 750 coils from bike wreckers will do the job
coinz