Williams Whirlwind came from the factory with a post below the flippers. Wonder if that is how Pat Lawlor originally designed the game, or on testing was it discovered that there were too many SDTM balls and typical players needed a little occasional save. I own a Whirlwind and am very glad that post was installed, even though it only helps me about 5% of the time. Pinball games were designed as money making machines, but not all games had a fair balance between fun and profit and some are notorious drain monsters. I have seen many games with an added post to improve the fun factor since the game no longer has the job of making a profit. I have no objection to adding a post to increase the fun factor in a game. People talk about disabling the tilt mechanisms, but that was not how the games were designed, so is shaking a game that would have tilted on location much different in theory than reducing drains between a rather large gap between flippers? Yes, one method is more obvious than the other, but they are both changing the original setup of the game.
As Jimmy and Steve say with each order: "Enjoy Your Games"