Last night I tried to do ME and as soon as I started the leg presses I noticed my left knee was hurting so I couldnt do that part. I really struggled through the whole workout. It was like I didnt have the energy to do it. I am kind of discouraged right now. BTW, I bought a used original club steb with six risers from Play it again sports for $50. Was that a good deal? Im not good at estimating how much a used item should cost. I cant wait to break it in, but right now my knee hurts really bad. 