If its the same as the Agility 125 keep it at less than half throttle till 600km, then 3/4 till 1000km. Vary the speed. Don't run at slow speed for prolonged times.
The dealer gave it light sanding and things look good. They think it was flaw in the casting do to sand. They say they had seen it before. Just keep a eye on it. The dealer said not to sweat it that Kymco is great honoring their warranty if anything goes wrong.