My dojo is located at 95 Croton Ave Ossining NY or you can contact me at nihongoshinaikido.com
Another link with most NGA dojos is http://www.ngaikido.com/links.html.
When an Instructor says use your ki to correct a student that maybe because that is the root of the problem and not the symptom. That is the dificult part of teaching. I find that some students will make the same mistakes over and over even when they understand the correction that is given. That is because I have treated only the symptom and not the cause. An example in my own training; I was trying to do I kyu from a club attack and it was always a struggle to get the correct grip and ukes arm in the correct position. Mr. Bowe pointed out that my footwork wasn't correct. Once the footwork was corrected the technique would just fall into place. So the symptom was the poor hand position but the root of the problem was the footwork.
So lack of Ki can be the root to many problems of doing technique.