I had good luck with Chris's Carbs in Dayton OH, I live near by but I think he does do stuff shipped to him. He had about a week or two lead time in the summer.
https://www.google.com/maps/place/Chris's+Carb+Shop/@39.83556,-84.254638,15z/data=!4m5!3m4!1s0x0:0x2b3759212038d799!8m2!3d39.83556!4d-84.254638