i agree with George , you can do this yourself,i got mine working and i knew absolutely nothing about carbs. i did it by reading the previous threads with the help of all the good folks on the forum (especially Cotten)
Get an exploded view /diagram of the carb and start by getting familiar withthe components, take a piece off and then put it back on . clean/soak all parts in carb cleaner. At least if you do it yourself , if your scoot ever dies you will be able to tell whether the carb is the problem or not.