Mike -
I'm trying to figure out the logic of it...If you've taken a 110/112 apart, you know the scale rivets are 1/16" dia with a 1/8" head...and it is peened from the backside (gives you a nice round smooth domed head without training assembly line workers to be master craftsmen)...so the two halves can be assembled and then the rockerbar, blade, spacer, and spring put together and the three bolster + one rockerbar pins peened in place...
But if the rockerbar pin is hidden, it must be semi-floating...no way to peen it with the scales on...but the scale rivets are exposed...so why hide the rockerbar rivet???
I like rivets...I just can't see the rationale of hiding one while exposing the others...
Maybe some knowledgeable person out there can educate this ignorant grasshopper...
