rc controller tigger lever tension spring holder

designed this item to replace a small plastic piece inside a typical 2.4G Hz RC controller. The plastic piece has a tension spring attached at one end, and is to guard the throttle trigger or wheel trigger, so that when the throttle trigger or wheel trigger is off neutral position, the tension spring will hold this plastic piece, which will push the trigger to return to the neutral position. I don't know if this piece has an official name tho.