1987 F-250 4x4 351w. Just looking for some ideas on how to install mounting grommets on a new radiator. I just bought a new radiator it came with the new mounting clips for the bottom . But the top mounting grommets are way bigger than the hole they go in. The grommet is oval like the hole. The outer edges of the rubber are about 1/8 " bigger than the center grommets.I tried pinching it in no luck. Does anybody have any tricks. THX David