According to what was posted below by danowens3, you should be able to get more rivets through Thunderbird Headquarters. You should be able to find their telephone number on the Technical Resources Library. I think it is there. If not, one of us can give it to you, or you can just google their name and you will find their website and their information. Tell them what you are working on, and they should be able to find and send you some more rivets..