Oh, and for the emblems, they usually have pins on the back that are pushed into holes on the tank, which have fingers in them to catch the pins and lock it in place. Careful prying should get it off.
If there's double-sided tape behind them, use a piece of dental floss, hold one end in each hand, work the floss under the end of the emblem, and then pull while using a "sawing" action with the floss to cut through the tape.
mystic_1