right, here we go, no vibe through steering, no free wheeling hubs, tried without front prop, still there, although vibration is less now I have fitted an overdrive, the rear prop feels ok but I am going to try by removing it and see if the vibration is still there with just the front prop connected. The vibration is not a fast vibration like a drill, its more like if you had a warped brake disc or a washing machine starting a spin cycle. you can feel it though the seats. hopefully this will help with diagnosis