Same boat, but I think I'm keeping mine. It seems all of the newer models have a faint canvas print. I've been trying to figure out why LV made this change. It's seems deliberate, and I already understand how all canvas batches are different and not the same. But, the fact that pretty much 99% of the photos I can find of new PM owners show this, it's all batches.
Try to think on it awhile before you meet the time limit to return it. I'm seeing the PM inventory readily available to purchase via web if you later change your mind.