Yeah....don't try messing with the idle speed!
If it is a very low mileage scoot it might run at idle better when you get some miles on it.
You could try an Iridium spark plug, which often boosts the idle speed a little....and many play around with different weight rollers looking for better acceleration and improved top speed. But, it is a 50 so- it'll never be a racer
I think the newer models are leaned out a bit to meet pollution restrictions - especially at start up - which can lead to less than strong idle..but nothing to worry about.
Can your dealer's service desk offer any suggestions for mods that are proven to make a difference with your model?
Welcome to the forum.
Stig