I assembled the first four bots that I have. Thankfully, because the leg is somewhat poseable this is possible without him falling over. However, I found that I had one heck of a time getting the arm to stay on and getting the chest to stay attached to the torso. The pieces don't "click" together for some reason. I've had no trouble with the leg staying attached with the torso though. Anyone else out there find this to be the case as well? Here are a couple of pics for size comparison. First one is with MP Grimlock and the second is with MP-4 Optimus.