Thanks for all the date kh777. (What's with all the 7s? -
)
I don't know if these photos will help. Not much to take from these photos that hasn't already stated above or previously posted, but since some people are more visually inclined and since I did promise to post some photos:
Campy (Super Record?) spindle and Dura-Ace 7400 spindle
Campagnolo spindle with Super Record arm (left) and Dura-Ace 7400 arm (right)
Dura-Ace 7400 spindle with Super Record arm (left) and Dura-Ace 7400 arm (right)
The first two photos are not much help (at least to my eyes). The last two photos show that both crank arms sit deeper onto the Campagnolo spindle, with the Campagnolo crank arm sitting deeper onto both spindles than the DA arm.