OK. Thanks guys. I was having a self pity party. I'm over it I think.
I swapped power supplies around like I've been wanting to for a few months now. I had a PS with a bad fan that I need to RMA. The other troublesome PS came back from its second RMA so I put it back in the machine that it was intended for. That freed up the other power supply that I bought to replace the one with the bad fan. Those issues are straightened out. In the process of getting that done, I found that I had a bad 16x ribbon cable and not a bad GPU like I thought. That is very uplifting news for me.
I just bought another used GPU from the classies here and I think that one of the previously diagnosed as bad GPUs may actually be good so.....
As of this writting, I have 10 R9-280x/7970's and 1 or 2 more to install. It's too early to see how the machines will hold up but assuming that they do, my ppd should really go up.