A couple of things:
No one but the shop guys noticed what was loose or why. There is an assumption that it was the BB, but it sounded like the crankarm to me.
A 113mm DA spindle could be pre or post 1985, and the one in the picture looks like the post '85 Japanese taper 7400 version.
The other thing is that it is said that all the different kinds of tapers are 2° in the various 3rd party manuals, but this doesn't appear to be true. Has anyone else ever actually compared the tapers by holding different spindle tapers against each other to see if the spindles remain parallel?
I have, and Mavic or Campy spindles do not remain parallel to Shimano spindles when you do this. One of them is either more or less than 2°.
If the DA spindle works, then it works. But that isn't the information we had when the thread started, and if the BB or crank arms develop play again I would seriously consider looking more closely at that Japanese spindle.
The other thing to watch out for is the crank bottoming out on either cup. I've seen that, too.