Highland Ham wrote:
You highly likely find a matching point for the 160 m band when you
extend the twin feeder .

Sorry, with a feedpoint impedance with R in the units
and X in the thousands, there is probably no length of
feedline that will come close to being compatible with
a tuner. No matter what feedline is used the SWR is way
up in the hundreds to thousands.
--
73, Cecil http://www.w5dxp.com