Magic Screen Units, when misaligned, exhibit certain symptoms which will help you diagnose (and correct) the problem.

Exhibit's Mystery is a beautiful sequence game. A masquerade theme, with mystery kick out awards. Complete sequences 1-4, 5-8 and 9-12 to light three different playfield specials. Gorgeous backglass and playfield artwork with fantastic lightboard design and a great stencil round out the package.

Magic Squares units are a really neat moving numbers feature. After working on a few games with this feature, I really appreciate their simplicity in design.

You've got the whole thing apart... now what? Follow these instructions and you'll get it back together quicker than you might think.

Now that you have the thing apart, you should be able to clean it! Be very careful of what and how you apply cleaning agents to the reels, the numbers like to move with the cleaner. Tomorrow we'll talk about how to put the whole thing back together.

Disassembly and cleaning of the replay register is very important for correct operation of any multi-replay game (such as a bingo or upright arcade/slot). There are many small pieces to keep track of on this unit. Pay attention to the direction from which you remove the main shaft! Only one reel is keyed and you will break the reel if you are not paying attention.

United's Jones Plug design is fairly unique in the world of pin games. The parallel rows of male pins are replaced by a single inline package, with pins that wrap around the edge of the plate. Cool! And infuriating!

An interesting idea for a new feature on a bingo is incorporated in this 20 hole game: by earning a 'Gate' feature, the player can swing the rebound rubber out of the way and get to the second row of holes easily. The rest of the game does not look incredibly appealing - it is low-scoring and has no extra ball feature, and no Red Letter game.

Pretty self-explanatory - don't use Vaseline on any motor on an EM. Was used during World War II to keep games going, but hardens into cement! If your game has Vaseline on any motor, it will need to be removed.

Adam from the One and Done Pinball Podcast calls in to ask a question about how to determine if a spring needs to be replaced and how to know what kind of spring to order. Parts catalogs are invaluable for EM games.