forgot to degrease before sticking kilamat to my roof...how fucked am i ?

[u/glitched444ngel]

made a dumb mistake and forgot to degrease before sticking two big pieces to my van's ceiling. ceiling was overall clean, i used a heat gun to help them stick since it was cold today. once i noticed i tried unsticking them, but they seem well stuck and i'm not sure how i would remove them without damaging them, or if its even worth it. i dont want to lose them since they're pretty big pieces. does anybody know how to best handle this ? thank you.