Hi guys, Early Rotax 912 UL 80 hp, just installed a MGL Extreme and I keep getting over voltage alarms- voltage varies from 13.5 all the way to 16.7. I changed the regulator with no difference. My question is what is normal? My friends Rotax does not vary any where near this much. My problem is this might be normal for my plane, I just have never had instrumentation to know. Thanks-