@soix , this is probably a stupid question, but what is "shotgun" biwiring?
And to clarify--does it matter that the jumpers you used in conjunction with the biwire are bananas? The reason I ask about that is because I still have the (gold plated) jumpers that came with my B&Ws, but they are not bananas, they are contoured strips designed to just fit underneath the speaker terminal nuts, and since they accomplish the same thing, would the bananas actually have a different effect? (I can see where the bananas would be easier to experiment with and use.)