Roadstar Eninge noise

I have a 2007 Roadstar Silverado. Even when its warm I have to use the choke to start it, and it kinda runs rough for a while. I had the carbs cleaned but it has never improved. Any ideas? Should I replace the jets and soak the carb even though the manufacturer claimed they cleaned it?

Also the engine has a bit of a "tinny" sound to it. It doesnt sound like the exhaust or a rattle, but more like an old truck that something is wrong with. Could that sound be carb related also? Its not the carb whine you can hear when its running, I do know that sound.

Ive only had it for a year and a half, and it always starts and never quits. I admit I dont know enough about bikes, so I want someones opinion on whether this needs attention or is pretty common.
Thx,