"No material washes away or really goes anywhere."
Looks good to me. I am not sure how much rain you get there but since your driveway doesn't appear to have much of a grade, Soldier415 has a point about having it crowned so that rain will drain off. It's not material washing away, but wet spots where the fines and then the rocks get splashed away over time that is the problem. Even with a good crown a driveway will eventually fall apart with high traffic (i.e. teen drivers) and higher than necessary speeds (i.e. teen drivers). I used to work at a gravel pit and it was amazing how fast the freshly graded access roads would turn into washboards and truck swallowing potholes with just a few hours rain and speeding dump trucks.
I just regraded my driveway also and did about as good as you did except where the previous owner had dumped a load of pit run gravel at the road end that I found difficult to grade out because of all the cobbles in it. For crowning I adjusted the side link so that one side was off the ground a little and did two or three passes down each side. We get lots of rain here so I will probably have to do it all over again next year.