Does anyone know if this is normal? The baseplate of the trem where it contacts the pivot post has been chewed up so there is now a groove in the knife edge. The bridge is brand new. I installed it about a month ago. I bought the bridge on eBay from someone in Taiwan (I know, but it was the only place I could find this particuluar model). I'm wondering if it is a fake and they used cheap metal for the baseplate.