so, I emptied all the ram from the board and I ended up doing this the slow way. I put 4 dimms in at a time and ran an hour long memtest86 single pass. I washed rinsed and repeated, isolated the ones that wouldnt even boot and I slowly went through about half of them over the last couple of weeks in my spare time. I’m still getting some ECC errors but I plan to do a long memtest and hopefully try to isolate the other bad sticks.
Turns out free memory aint so free.