hitch

verb move (something) into a different position with a jerk. travel by hitch-hiking. informal obtain (a lift) by hitch-hiking. fasten or tether. harness (a draught animal or team). noun a temporary difficulty or problem. a knot of a particular kind, typically one used for fastening a rope to something else. a device for attaching one thing to another, especially the tow bar of a motor vehicle. an act of hitch-hiking. informal a period of service. informal

Slanguagely: "There is a hitch in your get-along", implying "there is a difficulty with your system/process/activity"