I'm working on a project JP, and I'm currently in the middle of reinstalling the playfield parts. I've got a question about the amber block with the mosquito inside. I pulled it out of the tub and noticed after a quick scrub with the dish brush that the front surface is horribly ghosted and faded looking. Can anybody tell me what material this is and how to polish it? Should I use a wheel or a flame? I also noticed that the front of it is dished in, it's not flat like I thought it was. Can somebody here confirm the shape for me? I hope I didn't ruin the piece.