How about running a pair of silver jumpers from the HF terminal to the LF terminal? You can buy 2 feet of 10 gauge, or 3 feet of 12 gauge wire for $8.95, from a jewelry supply house. You would only need a few inches in total. You could even buy teflon insulation if desired, but it would not be necessary. You warranty would remain intact, and your sound would be MUCH better than ANY brass jumper would afford.
