you turn the peg to the height you want and lock them in position with that nut ... not sure what the "right" position would be, but they do affect the way the hood moves just at that 'nearly closed' moment and seem to help it "pop up" when the latch is first tripped - may do it for ya
a bud and I messed with his 56 panel for a long time to fix the same problem and got it better with hinge positioning, but still the only way he can totally prevent it is to pull on the front of the hood as well as lifting - I think new hinges might be needed for his
Bill