Kymco Dink 50 – Mofaroller – throttled – too high speed. Urgent advice

Hi, I picked up and bought my ( first ) scooter today. I had done a test drive the week before. The throttle (mechanical) was not in there yet. The part ran loosely 60 and had a lot of steam. But woman must not be so fast with a mofa….. :’-( 😉 The dealer has now installed a throttle set “Variomat” or something, and the box now runs only 29 km/h. At this speed the speed is unfortunately constantly in the red range. 9000 – 10000. ( According to papers it should be at bumblebee 7000 ) I can’t imagine that this is good for the engine in the long run…….. With absolute newcomer as far as scooters are concerned. Used to be with classic mopeds (Hercules, Zündapp etc.) and then on the road with motorcycles and cars. Would be nice if someone could advise me. (Just have a quick screenshot of the offer attached…. Is already a very horny scooter, I find 🙂 ) MfG Tab