Did not find much about this on the search function. Has anybody experienced this and what did you find was the best ways to fixing it? I have been trying to do some strength exercises of the quad muscles, particually the one that stabalizes the knee. I do one where I place a barbell with small weights on my feet, while straight legged and sitting the edge of a chair, and raise them parallel to the floor. Anybody got any tips to help me out>? cheers.