hi there,,i have a floor shifter from a cutlass and i think it is missing the spring,that holds the j bar looking thing in the detent part,,does anyone have a idea what is missing or if you have a extra spring or what i could use to fix this,,it has the factory t handle ,,you push a black button in to release it,,but the j hook looking part wont stay up,,i need this fixed as i am worried i will over sh*t into nutral or worse ,,reverse,,thanks