You'll catch it at the right time and it'll click. I washed the sides off my 2003 and just about the time I was about to break 80, I sold it and bought the 2+2. Started all over again!
Be patient!
Now that I have quite a bit of experience driving Allison's, there's not much difference but when I first got my 2+2, I was green and it showed when I got behind the wheel.