Organizers with the Blueberry Festival are leaving Plymouth city leaders feeling blue after threatening to take the fest to another town. This, due to concern about renovations at Centennial Park, which would possibly leave them with a smaller space. Festival leaders admit their options are open, and no decisions to stay or leave have ripened. Plymouth's Mayor says the festival people have known about the park project and never indicated that it would cause problems. One thing is certain: This year's festival IS happening in Plymouth, near the end of August.