On my 65 Valiant where the antenna cable goes through the cowl should there be a grommet there? It looks like there is some type of tar material around the edges of the hole but no grommet. It's leaking through the antenna hole when it rains. I looked in the 65 parts catalog and even the 73 parts catalog I have and I don't see a listing for an antenna cable grommet. Does anyone have one with a visible part number? Is it the same grommet for the later speedometer cable grommets?