[fizzwheel]

If you've got the clear plastic off the top of the sticker, take a clean rag and diip it into petrol and then rub the rag over the top of the sticker.

The petrol will eat the glue and the sticker and you'll be able to peel it off the tank or if you rub hard enough the sticker will ball up and then come off piece by piece.

You can the use the petrol rag method to remove any excess glue off the paintwork.

Thats what I did with mine when I took them of the GSXR and it worked OK, took a little while to get them all off though. So you'll need to "stick" with it..