Quoted from e4mafia:

Great thing is that because the ball isn't hitting Wellverine, you can mount whatever you want on top there, without needing to build a replacement switch or other assembly.

Quoted from Rom:

Here's my pro so far….
Mods:
-all GI & inserts changed to warm whites (only very few colored ones);
-convolux yellow glowing plastic protectors;
-hitchhiker sign;
-woodbury sign;
-express mart sign;
-backpanel ramp illumination kit;
-prison tower;
-fishtank;
-prison door roof;
-Maggie figure (like that girl)…

TWD PRO mods.JPG 222 KB

Quoted from capguntrooper:

First MOD you need to do is the VOICE call out mod. Format your USB again and load that sucker up. Having the character voices in there makes it a completely different game and playing is much more enjoyable. And do not forget to switch the two plastics behind the well walker so he goes back all the way from direct strikes, this will also prevent your top plastic from breaking in the future. Stern may have already fixed this on newer TWD pins but if you a NOV or earlier model they did not. See pic for reference. The smaller plastic needs to be on top. The assembly line folks assembled them incorrectly

Screen Shot 2015-04-01 at 8.50.33 PM.png (Click image to enlarge)

Quoted from capguntrooper:

» YouTube video

Quoted from NPO:

Dude, I pulled a Bowen earlier today. Ball was in the right outlane, and it had actually passed the post, and I was able to wiggle the machine side to side and gently up and down very slightly and got it to travel back up and out of the outlane.
It was unbelievable. It's moments like those where all the "BS drains" are cancelled out, and you feel like a pinball god - for just one teeny tiny 2-3 second blip...
All credit to Bowen; he did it with the lights and sounds and audience and pressure of PAPA. I did it just in my private gameroom.
So amazing.
Added fellow Pinsider, Beatmaster's shooter assembly mod. Looks so killer. Link to read up on it is here: https://pinside.com/pinball/forum/topic/shooter-rod-housing-lighting-kit-new-mod
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Looking at ordering the Crossbow with laser site as well as the BG light mode from Gnassel soon.
Anyone be able to comment on the crossbow with laser mod? Any inputs/thoughts/reviews?

Quoted from NPO:

Yes.
Undeniably.
I have a Pro and Prem literally side by side for a temporary time, and the difference is pretty huge. The lightshow alone is just awesome and something I did not expect to win me over in such a convincing fashion. So many things I did not know about with the Prem. I will admit the BG ramp does have a tendency to shift a bit from side to side, and one airball was so powerful it left the BG ramp entrance and flung itself sideways to the other end of the same ramp. My machine is perfectly horizontally level with a 6.6 deg pitch (Craftsman Torpedo Level checked).
All the tiny little things really added up though for me: 2 spinners, drop target, flasher inserts FOR each spinner, fishtank, walker bombs, crossbow, WW magnet, really nice clean artwork on the cabinet (you can see a LOT of differences with a Pro and Prem side by side), lightshow, BG ramp/target, WW guts, and coordinated color changing arrow inserts, traditional lockdown bar mechanism, and service rails.
Granted, I am prolly in the honeymoon stage, but like you, I owned a Pro first, and yeah, definitely worth the upgrade to me. Took me about two months nearly to the day to go from Pro to Prem - first time I have EVER upgraded.