My original mount had a threaded hole at the top that connected a black steel bracket to the engine. My new dealer sourced, OEM Mazda mount didn't have this hole threaded so I could not install the top bracket. I didn't find any TSB's on the topic. None of the new mount photos I can find online (a lot), have hole threaded- its just a cast hole. I suspect it is an assembly item and not needed afterwards. Nonetheless, I am planning on threading the hole and reinstalling the bracket later today. Anyone have any insight on this?