I think I just need to slow down my speech considerably. I was recording myself this afternoon. When I played it back I was shocked to find out how fast I was speaking, or trying to speak, at times. As a musician, I equate this to trying to speak at Allegro or even Vivace. I need to slow this down to almost 1/2 tempo, either at Andante or even Adagio, if I'm trying to stress something important. When I slow it down that much, almost all of my stammering nearly goes away.