I have also had unilateral (left-sided) dominant symptoms, only within the last few years have things shown up on the right. Not nearly as pronounced.

The emg/ncs is really a subjective test. I've had many, and not one of them is alike. I mention a teaching hospital because they do them often, and on a population with more varied disease processes. If you had an abnormal one, then a normal one, I might want to see what a 3rd one says. Long fiber damage usually doesn't disappear.

Talking with your neuro is a good idea. Show him the lizajane spreadsheets & see what he thinks.