I think I got it now!
There are two pieces of white plastic.
One that is attached to the buttons and the other white plastic piece actuates the switches for the fog lights as seen here:
What needs to be fabricated is only the white plastic piece shown above that actuates the fog light switch because there is already the white plastic piece attached to the dummy button as pictured here:
And if I may take a stab at this, the reason why SKA had to cut a longer piece of rubber than the original part is that if it was the same size, because of the give of the rubber, it wouldn't have exerted enough pressure to actuate the switch.
I know it would be easier if I had my car already but it's still on the high seas.
Thanks for all your patience.