Or.. you could clip one leg and get a couple led flash lamps and be good. If you plan to install leds it needs to be removed anyway.

https://www.marcospecialties.com/pinball-parts/05-89R

https://www.marcospecialties.com/pinball-parts/05-89B

That resistor supplies a small amount of current all the time to keep the filaments "warm" to make the bulbs last longer. If you use led flashers you have to clip off one leg or remove it because the small amount of current will make the leds glow.

The small diodes you can use 1n4007 for everything. They are 20 for $1.

https://www.greatplainselectronics.com/proddetail.asp?prod=1N4007

One thing, when you install your mpu327 make sure the old brackets will not contact any solder pads or traces on the board. There is a thread here of issues where the bracket needed trimming.

If the top of your playfield is as nice as the bottom you got a nice one. The bottom is as clean as a pin.

Ok. Let's micro manage words. I believe you knew what I meant. Let's try this instead.

The resistor allows a small amount of current to pass.