Just installed a new radiator in a 97 1.8t. Using a used hose from a 98 1.8t. The hose has no leaks, but it does not seal tight against the short radiator pipe at the top. Is this a dry seal in the hose? I can wiggle the hose after I pop it in and snap the clamp down. It's seated all the way, but it just doesn't feel tight. Is there a seal sold separately or do I have to buy the whole hose?