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Factory never glued them, just saying. You can use heat to help them mold to contours a little better. Make sure you leave them spread out to relax long before you try to install. Laid out in the sun does wonders.
Ok........I took the majority advice and have installed it without adhesive and I think that was a good call. Almost done and it's looking great. I have one more question, on the dimmer switch should I mount it on top of the carpet? Is their a trim cover for it that I don't have?
Here is a pic of the trim cover that came with my carpet.