Be careful using Plaster of Paris and epoxy resin, too thick and both will generate heat that can damage
the original canopy. A trick I have used that has a 50-50 chance of working is use tooth paste, and dampened
toilet tissue and polish the canopy, it will sometimes remove the yellow film, depends a lot on the quality of the
plastic sheet that it was molded from. Try it on the flange first to see if it removes the yellow. This is also an
excellent way of removing small scratches and marks from a canopy.

Bill D.