You may want to give it a good thourough cleaning while you have the top off of it. Even if you can't see anything gunky in there, it doesn't take much to screw up the metering of the jets. You will need to pull the carb off of the intake for this to avoid getting any junk into the intake itself.
One other thing to consider while you have it apart would be to install the offroad needle and seat set. It is a new needle valve that is spring loaded to avoid flooding over rough terrain. (obviously this will only benefit you if this is an offroad toy)
If you can read this, thank a teacher. If you can read it while pooping, thank Bill Gates!
"A girls butt hole is like a 9 volt battery. You know its wrong, but eventually you put your tongue on it."