I wasn't aware of the King of Diamonds remake. this thread may be a good placard for other machines using similar technology.

I found Whoa Nellie! Big Juicy Melons to be an enjoyable game, I like the way it handles 4 players using 1 set of score reels (resetting for each player), the LCD display on apron was used to be able to view other competitors score.

I'm pretty sure The Pabst Can Crusher & Primus are the exact same playfield layout with different art package, my guess would be scoring is the same also.

Are these Solid State games with chime boxes still in them ?

2" flippers were the norm until 3" flippers were developed

It would be interesting to know the first 3" flipper game

You working on a "homebrew" machine ? you can document your progress here: https://pinside.com/pinball/forum/forum/homebrew-pinball

A couple of my friends have projects there and are coming along quite nicely