Welcome to Quilting Board, Kathy. Thank you for the pictures.
I have edited your picture. I think you need to bring the piece that holds the machine over the front piece.
Lower the yellow edge
Raise the blue edge
Raise the yellow edge so that the front edge is above the table top.
Lower the blue edge level with top.
Lower the yellow edge so that it rests on the blue edge.
I have not seen any decals for the Minnesota machines. From the edge that can be seen in your pictures, they look pretty good. Have you tried wiping down the machine with sewing machine oil and cotton balls or old Cotton t-shirt rags? There are some that have really spruced up their machines by following the tutorial -
Cleaning and repairing the Shellac clear coat on Vintage sewing machine heads
Janey - Neat people never make the exciting discoveries I do.