Today Thomas PA1M was here and I climbed the south west tower to remove the safety wires I had mounted around the rings before we lifted the tower.
After that we rolled out a 380v cable and connected it to the tower. Then the moment was there to see how the tower would behave when we turned it for the first time. We found the rings has a glitch on the same point.
So I have to climb again and see close to the ring is behaving on that point.