Its hard to say how many miles I've logged on them loose. I wasn't checking everyday and the first time I noticed they were loose.. well.. I think they were loose for quite a while.

I'll know for sure tomorrow. The good news is DA 7600 cranks are widely available on ebay used. $150-$250 shipped from Japan.

Although I'm not sure if its worth it at this point to spend an extra ~$100 to buy a brand new pair. I mean, as long as the taper is square, who cares right?

Hopefully I am fine and can keep riding these ones I've got.

Thanks for all of the help. Very, very appreciated.