Batboard

I have 4 HT1000's that are deaf- 12uV sinad. Anything common that I should check? I have tried to work over all the softpots, but not much improvements have been seen. What am I missing?
TIA!

I found my problem!
The DOS laptop I was using to tune them was putting out an amazing amount of noise. Move laptop, solve problem. A rookie mistake that I should have caught earlier!