Quoted from High_End_Pins:To be used and enjoyed it is better off now.
This is more important that a lot of people realize. As games degrade over time, they develop issues that take away from the overall enjoyment of the game. By doing a full-on restore you're ensuring the game will be enjoyed by many for years to come. It's like preserving a piece of history. The vast majority of pinball machines were made by companies that are now defunct or out of the pinball business, so what's left is what's left.