Joe not on all of them but the more modern ones can they usually have those push knobs you see on adjustable walking sticks simply press it in and move it one hole towards the back of the chair (if possible get two people to do it get Janie out of the chair to do the adjustment. Then while Janie is in the chair on a flat surface with someone standing in front of her and the brakes on gently tilt back the person at the front can act as counter weight by pressing on the arms to right it if it is still a bit to vigorous) The person at the front isn't always necessary but if the user has had a fright with the tip their presence is reassuring.