Queen bed mattress covers.

Hello Forum,

My wife and I are the proud new owners of a 2015 2720QB and are looking forward to taking it out for an extended vacay in May! We just have one issue with the trailer and that involves the queen bed mattress cover. Ours has a visible seam right on the top of the bed where 2 pieces of fabric have been sewn together to make the cover. We have been told that this is how the cover has been made for the last 13 years!! We located a photo on line of a queen bed with a "seamless" cover. Our question is this: Is there anybody out there who has a seamless cover on their bed and also how many out there have a seam running down the fabric on the top of the bed?