I'm using the new "BT80" electric start motor. My CDI stopped giving me spark, but one off an old China girl motor would give me a spark, only I couldn't run my bike with it. I assumed I needed a new CDI, so I got the one that comes with this style motor, and still I get no spark from the CDI. Only getting a spark from the China Girl CDI. Could I have bought a faulty CDI? I am stumped.