Extensions of a classical mechanics "piston-model" for understanding the impact of asymmetry on ICF implosions: The cases of mode 2, mode 2/1 coupling, time-dependent asymmetry, and the relationship to coast-time. - Hurricane, O. A.; Casey, D. T.; Landen, O.; Callahan, D. A.; Bionta, R.; Haan, S.; Kritcher, A. L.; Nora, R.; Patel, P. K.; Springer, P. T.; Zylstra, A. (Physics of Plasmas, 2022)