I concur about the remounts. With this much metal, nothing could pull out. I felt like I could recycle the amount of metal that the tap had to cut out to make the holes workable.
The location of the extra metal is interesting. The toe won't move due to the middle of chord length placement that was used back then so the heel would move. If you had a binding that
wasn't a pivot under the heel, you'd have been behind the mounting plate. I suppose back then, the choices were mostly pivots (or under the heel mounts) with Look and Marker. Or even a cable binding?
I find whenever I get on old skis, after being on modern gear, I have to very conciously NOT to initiate turns before gaining speed by simply edge tipping because my COM naturally is moving inside the turn in anticipation of the turning of the skis that DOESN'T happen until you get going. It can be entertaining, to say the least.
I hope to get to the Basin soon and run one or the other DHs first thing in the morning. I won't have time to do both in one visit, so I'll just have to go back. ;-)