@8ff2c4ef @96d079fd 
I just assumed I'd done something wrong, or used the wrong part someplace 😅 

 @8ff2c4ef @96d079fd 
I have an original working Sun board - I can take some measurements later.
You asked about what my PCB looks like? 
http://www.compu85.net/stuff/Lisa/PCB%20Photos/MEM_F.pdf 

I built that board out, but it didn't work. I never dug into why :S