The front and rear wheels on the RS are not on the same centerline (by design). If I let go of my bars when travelling straight, my bike wants to lean to the right.
Also, the front tire does not wear evenly from side to side (wears more on the left) and little handling quirks will show up as the front tire wears down. I just put a new front on my bike and everything feels good again.
I would bet a 5 spot that nothing is wrong with your bike. Just ride it.