Keep shooting it till it breaks. My favorite bow has about that much set, and is also a little too short (62 or 63 inches for 29 inches of draw). It looks about like that one does, but it still hits hard and is accurate, even if it isn't as good as the same bow would have been at 26 inches and less set. If it gets worse, it gets worse. it's just a stick of wood, and you can now build another. That's the joy of it.