Calculating sensitivities by a finite di↵erence method requires comparing small changes between numbers. When the numbers themselves are small (eg. for hypothetical metals with a strong carbon binding energy that lead to almost no reaction), the comparisons become noisy, and must be solved with very tight tolerances. The same hypothetical metals often have binding energies that lead to very sti↵ systems of ODEs, causing numerical di culties converging to tight tolerances. These issues do not plague the main results, but make sensitivity analysis a challenge in some areas of the discovery space. To address the convergence issue and numerical noise for kinetic and thermodynamic sensitivity results, we averaged the results of multiple Cantera simulations with 6 varying error tolerances, using relative error tolerances (rtol) of 10 n and absolute error tolerances (atol) of 10 2n for n = {5, 6, 7, 8, 9, 10}, at each C/O input ratio in the set {0.6, 1.0, 1.1, 1.2, 1.6, 2.0, 2.6}.