Thanks for replacing those bolts.
They were placed on the FA back in 1989 (or 1990)
The original route did not share any bolts or belays with The Kone.
If you look close at the three 1/4 hangers, I believe the bolt holes were drilled out to fit the split shank on the buttonheads.
And the 5/16 hanger I think is a Leeper.