Honda SFX 50 turns too high in the stand.

Hello community, I drive a 95 Honda SFX 50 that turns way too high in the stand. In the morning when I start it turns really high, the rear wheel turns very fast. Have also waited several minutes in the hope that it captures itself, but it doesn’t. E-Choke defective?? It used to be that when I hit the rear brake, he also caught himself again, then for a long time it was so that rear brake had no effect on the speed. H I have installed a new belt and since then it works with the brake and speed catch again. He doesn’t always do this turning up, sometimes when I drive to a traffic light, the speed goes down quite normally, but at the next traffic light it turns up again. I noticed today, that when I give light gas, it catches itself again, but if I give a little more gas, the speed stays high. Today I also had the spring from the gas train outside, since everything was free I don’t think he’s jammed i-where, what do you think? I appreciate every tip. I like the Honda, it’s very reliable, today I also looked at the candle, carburetor is set correctly, candle is nice deer brown.