Re: steering cable seized
Various techniques have been used to get oil under pressure to feed though the sleeve, and I have done it once. I think it is a waste of time because mine just bound up again the next winter. The replacement cables are just too easy to get and replace, and with very little work will last many many years.
Most cables have the part number stamped in the shield within a few feet of the end.
BTW, I pulled my old cable out with the new one tied to it to save time feeding it through the boat.