That there is a neat discovery.
Probably because of less rubber mass/thickness and less metal impregnated in the rubber mold.
Imagine if all the repro parts are that much lighter relative to their original counterparts, you can shave off a whole lot of pounds.
I started on an aluminum version of the floor swivel mechanism for the go-pedal, but time and other priority's get in the way.
It might not last too long, especially under hard pedal mashing in running, but it would serve as a neat conversation piece.