did anyone have a knee replacement and how long did it take for you to get back to playing any where near the level you did before your knee problem? what did you find the hardest to regain? did you have to ride a cart and play only level and flat courses to keep from twisting your knee? i wish the titleist performance institute would do a show on this so i might have a little insight. my clubs have become outdated, waiting for me to get back to them.