Does the hood fit down into the cowl at the sides? Close to the curved recess just in front of the door? It must fit this curve nice and close to pull the hood down enough to "stretch" it over the long weather strip on the cowl. If you have a gap at this place lower the hinge if you can on both sides and see if that helps. You can adjust them in and out to flush the hood with the cowl. If the hinge is too loose It will be difficult to get both adjustments right. The Tech Tip from Mac Kinghorn is very good. here is the link.

http://www.stovebolt.com/techtips/bodywork/ad_hood_alignment.html

Steve H