I fuss with letting it sit out a day or two myself

We got a TP on a deal on a 70 LS5 Coupe with a lot of other parts they sell for that car also Everything we got with that car fit well except the carpet.
My guy who does my seat repairs takes a bad azz Snap On heat gun & a wet towel & heats that crap until it fits where it's supposed to. The only downfall to that is if he has to stretch it too far it spreads the pile out & it can get noticeable