Thought i'd add my experience with the spigot bush. I tried both methods listed above, grease in the hole and knocking it out and using a pilot bush puller. None of these worked. After 2 days of trying we ended up getting a Dremel and using a nice sharp cutting bit to cut a slit in the bush. Once this was done i grabbed it with vice grips and it literally fell out in my hands. Took about 20 mins of cutting.