Rd. Atl. secrets: (or at least some of them)
Turn 1 is very fast. Much faster than you think it is.
There is one spot on the gators at turn 3 where it is a smooth launch and won't make you bounce as badly on landing...find it in your practice session and learn to hit it every lap.
Turn 5 is bumpy, but a good exit is crucial to get up the hill, get it slowed down for entry, get on the gas early.
Turn 7, slow in fast out. I will repeat that, as it is really important: slow in fast out!
Back straight: draft draft draft. Sound meter is on the left just before black flag.
There is a dip at the very inside of 10a (the left at the "bus stop") try to not hit this too hard, as it will loosen you up and kill your exit up the hill.
Turn 12 is really really really fast. You can go faster through there than you can get into it. (unless you have a TON of power)
That is all I am giving away. You're welcome.
Bowie