Dried on WD40 is a B**** to get off - wait for Glenn's refinish tutorial. Watch Muv's videos for the clean up. They are in the sticky at the top of the Vintage Sewing Machine section or
http://www.quiltingboard.com/vintage...v-t167789.html anyway a link - she has a ton of very well done videos. You don't want to damage those decals - very pretty.
You can also use aquarium tubing or leather shoe laces sewn at the ends - Charlee has good info how to do the belt.