So, okay here is what my earlier problem turned out to be. Here is the good news, it had nothing to do with the camera or the lens. Here is the embarassing news, it was operator error (that's me). I had overlooked that the sync was being performed by a POCKET WIZARD PLUS II. Here's the deal, it will not sync faster than 500th, and sometimes not that quickly.
Now I solved the "problem" by using a sync cord.
Boy do I have a red face,
Jerry