Yes, there should be a screw in every hole. You have to be careful when you put the new screws in if the table is in a slide due to the thickness of the slide floor. Take a screw out of the good side and buy the exact same from the hardware store. If the new screws are to long, you could damage the floor when you bring the slide in. Easy fix. Also check those from time to time, they work themselves lose.
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