As Fig. 9, for two models with f_scal = 0.3. The only difference between the models is the inclusion of magnetic-field effects from an internal Spruit-Tayler dynamo on the angular momentum transport (green line; this model is identical to the f_scal = 0.3 model from Fig. 9), and the exclusion of such effects (black line). Additionally, we show the corresponding rotational Ṁ boost factors (dashed lines and right ordinate).