Well, I have a 5th but my slide carpet looks like yours and that wrinkle would have made me crazy. Is the part that you are lifting up in the last pictures the same part that was wrinkled in the first pictures? I had never tried to lift mine before (I knew that part of the carpet slides over the other piece of carpet when I bring in my slide) but I just did lift it and it doesn't look anything like that but neither side of my slide goes clear to the wall like (it appears) yours does and of course the part of the carpet next to the wall appears to sort of go under the cabinets - I can't lift it up. I sure wouldn't like it if mine was left that way.
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