No indication of secondary wind maxima on the recon flights that I've seen. Just a smooth climb in windspeed right up to the eye wall. Fairly axisymmetric appearance with that perfect donut hole eye. Not going to invoke the "A word", but it certainly has some characteristics in common. That may be lending stability to the system. Irma was similar. Went a good day and half at high end cat 5 before undergoing ERC. Anyway, a freaking incredible system.