If someone were able to guide you through the procedure, or if you know how to do it already, the only expences incurred would be your part plus a gasket from the dealer. Now it is worth repairing. I can't begin to list the parts I have available, but I will try to give you some idea. I have just about everything including whole engines and shortblocks. I have decks, wheels, drive units, handles, etc.
Many parts are interchangable.
Crafstman, Case, Montgomery Wards, Wheel Hosre, etc. For the time being I would like you to fill out a request form and I will let you know what I have available and the cost, including shipping.