I recently picked up a Genesis 1 and a SCD2 off of eBay. The SCD2 came with all three of the metal plates and the plastic extender (it has the plate and the two screws to properly and securely attach it). Unfortunately, it didn't come with the screw for the big metal plate that attaches to the bottom of the Genesis. Which type of screw would I need? I don't have my Genesis right now as it's being modded by Az (ooXxXoo). Any help would be appreciated. Thanks in advance.