300/440/550 1987 JS550 Spark issues. stop relay? CDI?

Well as the title says im getting no spark from my 87 js550 pp. It has a new rebuilt motor top to bottom and a brand new PJS stator that I had. It stopped getting spark with the oem stator I had before the rebuild. So since I rebuilt everything new I put the new PJS stator in. So I know its not the PJS stator thats causing the problem. My question is, Could it be a bad stop relay? Or maybe a bad CDI Coil/spark plug wire set up. Ive tried looking up answers on here for certain questions but no luck.

Pretty frustrating to have a new motor top to bottom and everything assembled only to realize I have no spark now
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. Battery is brand new and all grounds are cleaned and in the same place as before when it was getting spark. I almost have to believe its a problem in the ebox because it had good spark one night and then the next day I took it out and it was like someone flipped a light switch and there is no spark at all. Anyone have any ideas?

Ive found new CDI sets and stopper relays but your talkin a pretty penny. Not sure if id be better off just buying a complete used ebox?
 
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