  We show that given a fully-punctured pseudo-Anosov map $f:S \to S$ whose
punctures lie in at least two orbits under the action of $f$, the expansion
factor $\lambda(f)$ satisfies the inequality $\lambda(f)^{|\chi(S)|} \ge \mu^4
\approx 6.85408$, where $\mu = \frac{1 + \sqrt{5}}{2} \approx 1.61803$ is the
golden ratio. The proof involves a study of standardly embedded train tracks,
and the Thurston symplectic form defined on their weight space.
