Headliner question

Steve Agrella said
purchased a plastic vinyl covered headliner from Rock Auto, the fabric glued to the plastic is all wrinkled,
They told me to install it and the wrinkles would all disappear in one to two months....lol
Anyone experience this and do the wrinkles flatten out or should ai return it.
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Plastic glued vinyl? What car and is it a bow type? I got a nice headliner, fabric backed vinyl? Like original,bow mounted, no wrinkles save a few fold lines off eBay for 60$. pro Kits. Shouldn't be wrinkled before hand though, it will wrinkle enough on the install. Lol!