Quote Originally Posted by Skyfire View Post

My forward/back hips are ok and sideways hips a bit weak, but like in this knee fix video, the knees are weak and he will fall back if he leans back (standing up straight is ok though). The problem is the same as the hips - the same rectangular ratcheting piece needs reinforcing inside of it.
I don't think this is a good fix for the long run. The rectangular ratcheting piece is supposed to flex and give a bit to engage the ratchet gear. If you make it too rigid by inserting a filler the actual ratchet teeth might get worn down very quickly.