Underneath the R front bumper are 3 big screws that hold it to the front cross member. They also retain the front edge of the undertray. The screws fit into rectangular clips that fit into rectangular holes in the cross member. There are plenty of ads on Ebay for similar things to fit Audis and VWs, but they all say not compatible with Leon Mk1. Can anybody advise me how to get the correct size screws and clips? Thanks.