Now we are going to repair the shellac clear coat as best we can. If you like you can clean the decals with sewing machine oil before starting this. Now wrap your index finger in the t-shirt and apply with a couple of drops of denatured alcohol and and a drop or two of linseed oil and begin to clean the surface in a circular motion and ending in going in one direction by bringing the finger down and lifting off the surface at the end. Now stay away from the decals at this time. This will keep you from sticking to the surface. You want to go in one direction to eliminate the swirl marks. Do this until the surface of the machine is as smooth as it will get. Now remember this will not reverse age of the finish but will improve it 100%. Now wipe over the decals with a little alcohol and linseed on the finger with one little swipe(lighlty). The machine should begin to look clean and shinny. Now dip the wrapped finger in shellac and apply a few drops of linseed oil and go over the decals, this will apply shellac over them to protect them. Do this several time because this method only applies a thin coat each time.