+ 1 on what Chy said.
A couple of things I would mention, tire pressure. Make sure they are properly inflated. A lot depends on preference, riders weight and the tire itself. I would suggest in the range of 33-38 front, 35-40 rear.Play with the pressure till you find what works for you.
Additionally proper gear selection is essential. for instance you would not want to come into a tight 20mph curve in 5th gear.
The America is a truly amazing bike and in due time you will be able to drag all the bits off her in the twisties.
Oh yeah, welcome to the forum