Noticed today that my transmission inspection cover was missing? The trapezoidal shaped plastic or rubber plug on the bellhousing. Is it bad for that to be gone? If so does anyone know of where I can get one overnighted to me for fairly cheap? I leave for deployment in a few days so I don't have time to wait and I know the missus ain't gonna crawl up under there and put it in before she drives it across the country! Help?