The lip that holds the Scoleri Brothers targets up has broken in two so they will not stay up. I'm trying to find a replacement but no part number is shown on it. Can anyone tell me the correct term for it so I can search and find a replacement. It's just a little flat plastic piece with a screw on each side. The plastic piece that sticks out on the actual Scoleri drop target is not damaged. It's the ledge it would normally catch on to keep it from going back down that has broken. Thank you.