I ordered some new stickers for the three spinners on the play field. What's the best way to remove the old ones and prep for the new decals? What do you use the clean these stickers when they are dirty?

Thanks for the replies everyone. I am talking about the three spinner decals on the play field on whirlwind. Mine currently have good texture but are dirty, I guess there is no way to clean them up?

Also just to be clear you do not want to use novus or wax on these areas right?