There's no way to adjust the springs that I know of. Powder coating gets to about 400deg F. I don't know if that would rob the springs of their temper or not. I replaced several hood hinges back in the day & the new ones didn't have a LOT of friction at the joints but Bill could be right about the springs being designed for a little. I agree that the true test would be replacing the springs with new (uncoated) springs & see what happens. If you want them colored you might try some spray paint.
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.
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