Power Unit Spring
To put the power unit spring back in, just gently push in and turn counterclockwise until it stays in. The smooth metal “button” faces out. Periodically check the springs when you take off your boots to make sure they're in the curved position (see photo)
Ski Pole Spring
To put the grip spring back in, pull back the trigger so it stays out of the way of your finger. Put your finger on the top of the spring, gently push down and turn clockwise until you hear a click. If you ever hear the spring rattling around in your ski pole, just push and turn it again until it stops rattling.