A controller implements a state machine for operating the bi-directional power converter with a flexible load pattern while maintaining a thermal condition of the power converter within acceptable limits. The apparatus prints an image on a sheet using an electrophotographic process. The crush sleeve is retained either in an undercut region in the hosel bore, on a mandrel extending from the hosel, or on a pilot shaft at the tip of the golf club shaft. Each magnet pod has a yoke with plural holes therethrough. A rectangular grill having a peripheral flange extending rearwardly therefrom.