  For a new family-nonuniversal gauge interaction to be accessible at the LHC
it will most likely couple preferentially to the third family. By coupling to
all members of the third family the production of a new gauge boson (the $X$
with $M_X\approx1$ TeV) will lead to final states with a distinctive
$\tau^+\tau^-$ pair. We study the mass reconstruction of the $X$ and the cuts
that can enhance signal to background. The $X$ boson should be associated with
the physics of flavor and in the simplest picture a fourth family. We discuss
how the mass mixing between the third and fourth families affects the $X$
couplings and a possible mixing with the $Z$.
