Hello all, I have the following problem with my Rex Rs 460 4 clock: If I want to start it and start it and give it gas it pulls for a Lurches piece about 10 meters then the speed falls completely down scooter remains but despite full throttle you let go of the gas and gives again full throttle the same game again about 3-5 times in a row and then it runs and drives without any problems. Hope I have described it intelligibly. Greetings