Thanks to everyone and I have bought the sticky stuff remover so fingers crossed. For the great folks who have emailed me letting me know it's an easy mistake to make, I do understand that mistakes do happen but I should have explained more about the panels. The panels wouldn't fit on as they curve inwards so when the large panel was fitted upside down, the 2 side panels wouldn't meet the corners,.....so looking at it I think it's quite self explanatory to turn the main panel the other way around. Hence why this muppet will never be allowed near my home ever again! Thanks again