As per the title, '02 V11 Sport unmolested with the exception of a power commander. Lower rpm[2-3k] intermittant. Feels like fuel stops suddenly or spark, no gradual running out of gas feel, more like ign. turning off. Only when headlight is on. Charge output tests on the low end 13.4 to 13.9, battery cranks the same, cold or hot 13.3v static. TPS seems ok battery cables and ecu ground secure runs well except when light is switched on. Any Ideas? Power commander voltage sensitive? Regulator output too low [it is Ducati after all!] but I've got 4 Ducs with the same regs and no issues. Head and tail bulbs are LED