Edit: When it doesn't move and it should...use a hammer.
And when a job is done, make sure you have more screws then you initially started with.
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<br /><br /><i>If you believe you have already won, then you haven\'t, because you have obviously underestimated me.</i>~Me<br /><br /><i>He who knows, does not speak. He who speaks, does not know.</i>~Lao-Tzu