Now then... I'm happy to report, that the transplant worked out brilliantly, a battery measuring 12.5-12.6 is being charged at 13.5-13.7 at different throttle positions, I will see, how much current goes into a fully charged battery. It was a bit of a bit©h to put the new stator on - first the connectors gave some trouble and the mounting holes do not line up, which would have been less of an issue, if I could have gotten the rear spoiler off, but the top box holder and it's bolt is rusted together so much, I have rounded up all allen heads, even after repeated attempts of penetrating oil treatment and heat. Eventually I will drill off the bolts, but now I couldn't have arsed, so I had to attach the stator with the spoiler in place, it must have been a wonderful sight of me trying to bend my arm into unnatural positions to reach inside.