I recently bought a flatnose Morris Cowley


On these, the steering box is bolted to the engine block and isolated with a rubber bush. The bush is absolutely shot and allows a lot of play in the steering. I have taken the complete box and column off, and tried to get the bush out. There is a brass "plug" about 3" diameter with a large hex in the center (which a previous owner has filed down to a flat). There (was) also a little brass "nipple" about 3mm diameter sticking up from this plug, which has been sheared off. In order to get at the bush I need to get this brass bit off. I have clamped the flats in the vise and used the column itself as the lever to get it undone, but its just not unscrewing. In case the "nipple" was a locking pin, I have drilled it out as deep as I dare and there is still no movement...
Has anyone got any ideas, or knows the steering boxes well on these cars?
Thanks