and t take rest of seal off once spoiler off - small amount of white spirit and then before drys put some warm water and did the trick for me 
Did you have any paint issues? I've read that you may need to have the tailgate repainted.
I've been wanting to remove mine for a long time now, so have been searching around for a tailgate without a spoiler. However, oceanic green is pretty rare.
Think ill try removing mine.
