Enhanced view of the two middle right panels of Fig. 3. Error between the PK and Schwarzschild propagation delays δ_α, i(Δ_prop), for each of the eccentric systems when lensing corrections are included (dashed lines) and without. Lensing significantly improves the solution, but marked residuals remain. The typical magnitude of δ_α, 2(Δ_prop) are less than δ_α, 1(Δ_prop), but even in the case where we consider the second order solution with lensing, significant timing discrepancies are present.