Hey guy's, mind if I, weigh in on this. I just checked my Bing like the one you just showed Nick. It looks the same.
Now my vertical Bing is slightly larger, unfortunately I'm not in possession of my scale right now. Have a couple of Doll 364's
with the same style weights. My rule of thumb is go a little lighter and move the weight out farther on the arm, let the leverage work.
Sorry I couldn't be more help.