727 one bad clutch plate. Input to output washer half gone

Is this burned up friction still flat?
There should be a big fat steel plate about .25 inch thick as the first plate in ; was it there? There is plenty of evidence that the steels were only driving a small percentage of the friction material.; this means something was amiss; they were NOT being properly sandwiched.
My first thought, not properly indexed, is not evidenced in these pics.

View attachment 1715881083
Yes, thicker steel plate was there at the bottom.
Yes it seems the contact on all the others was only 2/3's to 3/4