TWD is considered the toughest and most brutal game by a large number of people on Pinside, and I'm curious to know how you have yours sloped.
Playing at the default 6.5 makes the game play slightly slower, but the outlane drains are absolutely punishing.
Setting it steeper does slightly reduce drains on the sides, but the the game plays faster and that in itself is dangerous.
There's no safe spot in this game, which definitely makes for a challenging time.
So, how is your game set?