Yup, me too. Ended up jacking the Landy up with the trolley jack foot on the bottom of the relay pin, and sledge hammering the chassis (wooden block sacrifices) to try to free it up. Mud and silt collect around the relay in the chassis former and set like concrete. There is a way to change the tufnol bushes in situ, but as Puddlejumper stated, get it wrong and several hundred pounds of angry spring pressure will try to remove your teeth (or the garage window in my case, long ago.....)