Talk:Special Delivery Box/@comment-188.223.65.106-20110425172409

You can only get vehicle parts if you don't already have a finished combine. If you do then you do not get vehicle parts. This applies to both farms, if you have a fully upgraded combine (or have fully upgraded tractor, seeder and harvester) on either farm, then you are not going to get vehicle parts because the game identifies that you do not need to upgrade any more vehicles. It's a bit of a glitch on Zynga's part and makes it near impossible to upgrade other vehicles of the same type without buying vehicle parts.