Happen to have a link to the ones you used?Not those exact ones but something similar. Mine required drilling/cutting a hole into the mat then a two part piece sandwiched the mat and clicked together. The button screwed into the carpet. I love the results. In the pictures the factory ones are plain and the added ones have a cross in them to screw in with. You'll have to excuse the dirt, it's my DD and I haven't vacuumed it in a couple of weeks.![]()
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