This topic has been moved from All Pinball to the Technical Help Sub Forum. It could have also been moved to either the market place or buying/selling advice sub forums.

Good luck OP. I hope you find the parts you are seeking.

Can you give some pics?

So you found original left side board and aluminum interrupter? Wow - I'd like to know where you found those parts. (My machine has the newer board with plastic interrupter on the right, but the original metal interrupter and board on the left.)

The blades are simply copper strips. Technically, you don't need them - they just add additional heft to the button effort. If you like heftier feeling buttons, you can try to fashion the strips yourself out of any piece of thin copper that is sufficiently long - maybe you can just pillage some copper strips from a leaf switch somewhere.

The mounting brackets are not much - they are simply ways of spacing the board a few millimeters from the cabinet. If you can't find the bracket, you could simply screw the PCB to the cabinet with some plastic spacers.

Have you seen this thread?
http://pinside.com/pinball/forum/topic/judge-dredd-left-flipper-opto-board

It may be that you just need a newer Great Lakes Modular board. Check to see if your board has two small magnets (older) instead of one large magnet (newer). They may be able to help you out.

The right flipper shipped with a plastic interrupter (type 2), and a metal one(type 1) on the left...

I swapped my left one out to the GLM board because one of the optos was failing and there is significant difference in the pressure required between plastic and metal. It's the newer 1 magnet GLM board, but it was a complete pain to get it just right, not be affected by the left kicker, and also avoid sticking itself to the kicker bracket. Scotch tape worked better for me than electrical tape at keeping the magnet from moving, but I had to insulate the bracket with layers of electrical tape so the flipper magnet wouldn't attach itself to it during some more furious flips.

BTW, you can adjust the pressure of the spring on the GLM boards... there's something like 5 different settings.