This on a 1954 235 truck motor. Does anyone know the part number for the rubber grommet in the oil pump screen? It attaches the screen to the tube coming out of the oil pump and the screen is bolted to the main cap. Or where to buy one? Getting ready to start assembly and noticed the grommet is hard as a rock. Don't think this will seal the screen to the tube on the oil pump. Thanks for any help.