I’ve built a very small tug, it’s only 14 inches long, great for sailing on the garden pond when I can’t get down to the lake. The speed control and drive is taken from a scrap servo ( the gears were shot). This does work and speed is fine but the dead or neutral band is tiny, and I can’t work out how to increase this. Has anyone got any ideas. I seem to remenber Glynn doing something similar years ago, or maybe that’s just a senior moment.