Theoretical curves based on the one-pion-exchange Chew-Low extrapolation scheme have been fitted to the $〈Y_4^0〉$ moment distribution curves obtained from ${\pi }^{-}p\to K^{+}{K}^{-}n$ and ${\pi }^{+}n\to K^{+}{K}^{-}p$. A sign difference is found between the coupling constants of the processes allowed by the Okubo-Zweig-Iizuka (OZI) rule and the OZI-rule-forbidden processes which contradicts the sign difference found from the ${{\chi }^2}_{min}$ fit of most of the tensor-meson-nonet decay rates. We explore a way to resolve this contradiction by introducing a non-$q\overline{q}$ admixture.

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