Mass model parameters and predicted time delays for the two underlying assumptions of the primary deflector’s mass profile. The power-law model results are shown in red while the results for the composite model are colored in blue. In the composite model case, the Einstein radius of the main deflector, P0, is calculated via the circularized average of the convergence and the power-law slope represents the derivative of the convergence at the Einstein radius. To address computational challenges in sampling the composite model parameter space, the external shear is held fixed at the power-law model results, and therefore no composite model posteriors are shown.