I am happy to say that Raymour and Flanagan called yesterday. They will replace the mattress and provide a bunkie board to see if this closes the gap. They could not tell me when this would happen because of high volume but I am hopeful it will be soon. Thank you so much for your assistance.I didnt want to respond until we actually had the mattress replaced. I hope they follow through on their end. User's recommendation: I never should have let the delivery men leave without checking more carefully. I couldn’t believe they wouldn’t replace the mattress.