Quoted from swampfire:So I do agree that before attempting a modification, you should fully understand the problem you're trying to resolve, and convince yourself that you're resolving a design flaw. Case in point:
Nascar: Garage scoop kicks the ball straight down the middle.
Black Knight: Ball shot to upper lock flies out the other side.
My workarounds to these problems haven't had any negative side effects. They are also temporary and easily removed if someone prefers the original design.
But I agree that sometimes the right answer is "play better!".
Here's a fix I made:
Centaur: Kick to Playfield coil locks on and melts the coil. You can't see the mech and don't know it's happening until you see smoke roll up from under the plunger. Replace the uncommon coil with a flipper coil and add an EOS switch (it is a modified flipper mech after all). No side effects, coil will not melt if it locks on again, easily undone back to original.