Hi All, I just replaced The CDI or power pack or brain as it is sometimes refered to. My previous one was not working on 2 cylinders. Bought a used one and ran great on a 20 minute test run. Came in flushed the motor out, no problem. This was 2 days ago. I checked the fuse in the lower wiring harnes. Perfect. Still no spark. Any Idea what I might check next?