Howdy, I just removed the bolts, what would cause just one to wear like this?

I searched all over this site and the net for flex disc, it seems to be quite the elusive procedure, with much debate over which way it should face, etc.

Do I have the parts configured correctly?

Here are pics.






Thanks, any input would be helpful,
John

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1986 190D, 2.5L, 5-speed swap, 180,000 Miles (60K by me).
Jeep CJ-7 with Cummins 4BT/NV4500/AtlastII 4.3.
Grand Wagoneer 4BT project in progress!