I have found bi-wiring to help on my Guarneri's. I went from a single run of AQ Argent full ragne, to internally biwired Argent to a double run of Clear SE with significnat improvements in resolution, extension, and soundstaging along the way. Of course, this is an altogether different speaker, and your mileage may vary. I think PerfectImage is right. If you can afford a double run of high quality wire, it's definitely worth trying. Perhaps you can borrow another run from The Cable Company and see what it does in the specific context of your system. At a minimum, you shoud dump the SF jumpers and go for short lenghts of the same cable you are now using full range. The SF jumpers that came with the Guarneri's are VERY pretty, but not easy to make a tight connection with. BTW, I'm about to go back to internal bi-wiring with single run of Dragon. Hope the better wire offsets the move away from full range double bi-wire!