Pop,
Thanks for asking this question - I will soon be in the same situation myself and was wondering how to go about it. I shall go down the hairdrier and cheese cutter route though I suspect using WD40 to remove sticky might leave a slight trace of WD40 which could prevent the new plate from adhering. Trouble is I will want to replace the number plate before moving the 'van from storage. Anyone got a seven and a quarter mile extension cable I can borrow ? ?
To be serious I will print up a temporary paper plate to get the 'van home .
Mike E