Congrats on the new knee. However, I am of the impression these knee joints are not for running and major climbing. (Doctor friend of mine who attends to athletes doing this very thing.)
Do NOT let the recovery therapist tweak you too hard, be hyper-aware (especially if s/he is a gorilla body type) and give a definitive 'OK ENOUGH' when approaching bending threshold of your knee. Try to avoid the forceful or insistent ones if you can.
Congrats on your new joint.