Community Builders will hold its next meeting in Petersburg on Wednesday, May 1.Registration begins at 3 p.m. with a tour of True Blue Electric, 116 Main Street. Tours will also include Rae Valley Street Rods, Petersburg Ag Supply Center, and Cedar Rapids State Bank.Dinner will be at the Knotty Pine with a program on “The Big Idea” by Kelli Faltys of Central Community College Entrepreneurship…