I used to run into a situation in that type of hinge where the hinge simply needed lubricated. A shot of oil and the hood corner would drop right down. Whether you use Brian's solution or not a squirt of oil on the moving hinge parts is always a good idea.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.