I have a 1975 Suzuki Fury (close to an El Tigre but not the same). The sled starts, runs for a bit then looses spark. If I try to restart it there is no spark. If I let it sit for a while (15+ minutes) it will start. Then loose spark. I replaced the stator. Same thing happened. Tried different coils. Same thing happened. Only thing left is the CDI box. Or am I missing something?