Thanks for the comments. My shield K1 worked so well with my Pro that I was sure that was not the problem. Of course, DJI tech support is trained to jump on the first easy out they can find. But I was able to get by that and it is on the way back to them. The one thing that I did not try was to revert the controller back to the previous version. That could have helped immensely but hindsight is great as always. I intend to replace it with another Advanced so we will see. That was my first experience with the refurb unit. I usually have good luck refurb units but now I am not sure if I want to try it again. If they come back and tell me that there was nothing wrong with that unit, the first assumption would have to be the RC. Both RC units that I used had v1.8.0 , so they could have both been causing the issue. I will have to search for the older version and keep it in one of the RC just in case the next one does the same thing.
As for the Windsurfers, I have a pair that I used on the Pro and I really didn't see much difference.. In this instance, control range was not the issue. If I flew using the map display, I could fly successfully way outside the video range. But I don't like to do that..
So now I wait for DJI to accept the return and then ship another one.
Happy flying
Maybe you should have went with a new Mavic instead. Hopefully they wont switch out the numbers on the same aircraft making you think you got a different aircraft.