[Buellwinkle]

If the block is warped it may be able to be decked but who knows if they make a thicker head gaskets for the engine, otherwise compression will be too high, or worse, piston may hit valves. If the block is cracked you are outa luck, I doubt you can sucessfully weld a cast aluminum block. If you can get it magnafluxed or use crack detection dye (goodson makes a kit) and prove to them that the block was damaged I don't see how you can lose in a credit card arbitration or small claims court. Good Luck.