The spring was pressed in as far as I can determine. I've found the slot widths vary from hand to hand. I believe Numrich has the hands with the springs, but you may have a lockup problem. I made a new spring from a cheap set of feeler gauges from Harbor Freight. Just select the thickest one that fits the slot. They can be cut with tin snips and for extra measure I epoxied the "new" spring in.