increase over the expected production rate in the standard bulk SM RS picture is because of this enhancement of the coupling to bottom (which would be suggestive of the expanded custodial symmetry), as opposed to a straight enhancement of the coupling to all light quarks (which would be more suggestive of a large kinetic term on the IR boundary). One could study the rapidity distribution of the $g^1$ itself (as reflected in the final state top pair distribution). The fact that both $b$ and $\bar{b}$ are sea quarks would imply a more central rapidity distribution than would result from $q$ and $\bar{q}$, because $q$ as a valence quark will tend to carry more momentum than $\bar{q}$. However, the $g^1$ rapidity distribution is only modestly sensitive to the initial state, and is also sensitive to the $g^1$ mass and width. Thus, we turn to a more straight-forward measure of the contribution of $b \bar{b}$ to $g^1$ production [^2] which is to compare the rate of $g^1 \rightarrow t \bar{t}$ to $b g^1 \rightarrow b t \bar{t}$. In Figure \[fig:bxsec\], we present these rates for standard RS, the model with $\kappa r_{IR}=5$, and the model with $Q_3$ localized around the IR brane. 