FarmVille are making a big change to the Special Delivery Boxes. The Special Delivery Boxes are going to be updated and are suppose to give us only what we need. When we select a SDB from our Gift Box it will show on your curser like other build materials, you will then be able to select the building you need parts for and it will give you all the parts you need to complete that building.
This is now on a slow roll-out and will be with all farmers very soon.