Getting the stickers off wasn't all that hard thanks to the hairdryer suggestion. It stopped the sticker I was picking at from flaking and it peeled off nicely, celly thinners got off all the marks left behind

Why am I irritated.......
I took the tailgate outside to put it in the garage before the other half came home to kill me, I got round the corner of the house and the end of it gets caught by the wind, blown against the wall and I now have 1,000,000 very small but sticker free tailgate windows.
That was 3 hours of driving and £100 down the toilet. Wind is a major pain! and a note to everyone else, when you are carrying something made of glass, don't tuck it under one arm when it is very windy.
On the plus side I now have a spare handle with a key to put on ebay :S