yeah.. it is pretty funny! what's also funny is that several "purist" restoring Donkey Kong cabinets went with Sanwa sticks instead...that should tell you something.. well, at least those are made in Japan 
That's a contradiction of terms. In other words, if you use 3rd party parts when "restoring" a machine, particularly when OEM parts are readily available, you are not a "purist" by default. And technically this is not "restoring", it is "refurbishing".
I've got this red Donkey Kong that I'm trying to restore. What do I need to do with it to get it back to it's original state?
Restoration is a very flexible term since its meaning tends to change in subtle ways from field to field. In some fields, such as paint restoration, it means exactly what it implies, the repair of a painting back to its original or near original state.
However, when archiving, restoration doesn't necessarily mean restoring back to the original state. As implied above, this is undesirable for many items since it is considered an alteration. Therefor restoration is often used to specify
functional restoration. This has slightly different connotation than an actual repair... or as you so desire, a refurbishing.
In other fields, true restoration is understood to be
impossible or even
undesirable. For instance, many car enthusiasts restore classic or antique automobiles. A GTO might have a fiberglass body held in place with steel clips. Those steel clips tended to rust badly. NOS OEM clips are available, but are undesirable to use. Preference is for third party clips made from stainless steel. All of these cars are still considered restored, even though their individual parts may not be OEM. Another field includes the restoration of antique lamps. Old wires were insulated in cotton or silk. In their original state, a person would be utterly insane to plug such a lamp in. Obtaining original cloth insulated wiring is still feasible (I have such a roll at home). However, using such cords is undesirable, even for true restoration work. The preferred method is to replace such wiring with standard rubber/plastic insulated. If the look of cloth wound is still desired, it's preferred to jacket modern wiring giving the appearance of cloth insulated wiring, such as those offerings from
Sundial.
By your narrow (albeit one of several correct) definition of restoration, nearly every single cabinet in the hands of every collector is not a restoration but a refurbishing. As soon as someone uses a cap, a spring, or even a Star Wars yoke or a TRON joystick from a different manufacturer that breaks your extremely narrow definition of the word. In practical usage, my cabinet is a restoration, even though I didn't use the same monitor(s). By the definition of my professional (and higher paid) coworkers, I've restored a Dictabelt despite not using any OEM parts. In fact, as bound by a contract, I am unable to modify said machine with modern parts if it conflicts with the restoration process.
By the way, your trap and bait argument doesn't work out very well. These guys might be ---uvulas---, but they got you by the Pavlovian bells.
