The worst one I restored was a Wms TURF CHAMP. A game I lusted over for many years.
This game was on location for many years. Rather than cleaning the PF occasionally the owner
slapped on layer after layer of varnish. Trapping all of the dirt and crud. It took months
to remove the varnish, 1 sq-inch or so at a time and a layer at a time. Sorry no pics, use
your imagination.