I had a similar experience after cleaning the carb on my bike as well. The solution for me was to re-tune the carb.
Here's how I do it. If someone knows a better way, please share.
I get the bike up on the center stand, making sure the rear wheel is off the ground. I stick a piece of plywood under the stand to get the rear wheel up a little more.
I fully close the idle and mix screws (clockwise turn), and start the bike. You may need a shot of starter fluid, but you should just be able to spray that around the air intake. It wont take much, so don't blow your self up or start a fire with it.
Once the bike has idled for long enough that it has warmed up, I start slowly adding gas. Do this by turning the mix screw counter clockwise. Start with half a turn or so. You should notice the idle kick up, if it doesn't, turn the screw a little more.
Once the idle kicks up, use the idle adjust screw to bring it back down to where it should be. Turn the idle adjust screw counter clockwise until it sounds normal at idle.
Do this a couple of times, until you notice that adding more gas no longer raises the idle.
Once you have reached this point, you are going to want to check your open throttle performance.
Slowly twist the throttle to fully open, and listen to the bike. (I use a second person to help me here)
While the bike it at full throttle, adjust the mix screw up and down in small amounts. You want to listen for the bike to hit the highest rpm, and then you should be set.
Be very careful if you do this as the carb is close to the rear wheel which will be spinning quickly, and could cause injury.
You'll want to make sure your not running too lean, so ride for a little while, and check your spark plug.
If it is black and sooty, take out some of the gas by turning the mix screw clockwise a little.
If it is white and ashy, add some gas so your not running lean.
It is better to have a little bit too much gas than to run lean. Running lean means your not getting enough gas/oil into the engine, which means it's not going to be lubed right and could seize, so watch carefully for that.
Hope this helps.
You may also want to read this article
http://scooter.wikia.com/wiki/Tuning_a_carburetor.