Head Rush devices utilize unique magnetic braking technology to create thrilling yet reliable adventure experiences. The magnetic braking regulates the release of the webbing, but what about webbing retraction? Our TRUBLUE Auto Belay requires retraction to allow a climber to ascend a route, our zipSTOP Zip Line Brake requires retraction to reset the brake trolley, and QUICKjump and FlightLine Free Fall devices require retraction to pull the tether back up and allow the next participant to leap. The retraction spring is responsible for retracting webbing, however it is not the only aspect of the device that may affect retraction. This white paper will outline information to help resolve inconsistent webbing retraction as well as an in depth look at the retraction spring.