Want to repalce table/chairs for dinette, any ideas, parts?

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I have an Ameri Lite with a dinette that converts into a double sized bed. After the first use as a table then folding the legs in, I find the fold in hinges Very stiff and hard to fold in. One leg became unattached from the table top with all screws coming out of the press-wood top. How can this be fixed? The screws are very short...about 1/4 of an inch..maybe slightly more.