Thanks, I am not spi usb programmer, Just want to help out, and keep you barking up the right tree
Seems most industry devs already know most of this, It just hit the hobby level and I found it relevant to some of you guys diagnostic posts. AMT must also know this.

Seems all three have similar issues HF BA AMT. Would that boil down to Bitmine original design ?

1 SPI for each master slave.... Is correct way.