Sorry. I didn't see this until now. I tried Bucks bar mod and it was not my cup o' tea. It narrows the "V" of your bars and for me, I had less control to the point of feeling very unsafe. So I guess I ruind my bars and wasted some dough. But I had to try it I guess.
I switched to Yamaha ATV bars, which is so perfect. Even better than what I was shooting for. Such a great, great ride now. See photos in my link below if you want to consider that mod.
I was just looking at your pictures. That looks like a great mod. Although, I already sent my bars to Buck so I'll be trying his mod out first, but I'm not certain I'll like it for the reasons you mentioned.
Can you give me some info on the longer cables you had to get? How long, how much, and where did you get em?