I recently had my ECM changed and do not know if it did it before or not, but now if I hold the RPMs at a steady 1400, or close to that, the engine will alternate between 1400 and about 800 RPMs. It does not do it at a higher RPM. I did disconnect the battery for about 1/2 hour, hooked it back up and restarted the bike without touching the throttle to reprogram the ECM, but it did not help. It seems I remember reading something on the old board about this. Any one know if this is normal, or if not, what might be the cause?