An ink stick for use in a phase change ink imaging device comprises an ink stick body configured for insertion in an insertion orientation into an ink loader of the phase change ink imaging device. In another embodiment, the airfoil is cast with a trailing edge exit hole, and then the material on the pressure side wall in the trailing edge region is machined away to leave a pressure side bleed slot instead of an exit hole. A pressure in the evaporative fuel processing system is detected. A gateway device may be configured to operate in a redundancy group in an active operating mode or a non-active operating mode. In one embodiment, clock buffers not required to drive active data lanes are placed in an inactive state to reduce clock power dissipation.