Shorting Balanced Input

I have a Gamut D200 amp and wish to try a SE set of cables, but I've misplaced the copper shorting jumpers that came with the amp. You need to short the balanced inputs in order to use a SE cable .Can anyone tell me where I can get some of these? The arebasically a stiff copper U-shaped piece of bare wire, and I might be able tomake them if that's all I need.....any ideas?
Thanks