I disabled all pull up resistors (Thanks, JayC), and the dang blasted thing still didn't work! monkey poo! I thought that would be it for sure! But then I added a temporary pull down resistor from PIN 5 of U5B to Ground (is that redundant? hehe), and it seems to work! Maybe I'll just solder a 2 or 3k resistor there and test that monkeypoo out!
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