By extra's I assume u mean flash??? Just scrap or sand it off. The wings are made longer than necessary so that you can cut them to whatever length is suitable for your model. The etched parts can be removed with wire cutters and the stubs filed with needle files. Bend the tabs as detailed in the instructions by pinching the tab in a pair of small pliers and bend whilst pressing the part down onto a hard flat surface.
Any Q's PM me
