Just got mine and went through all three modes. It is beautiful. Had a QC issue though, but it's probably a one of since I haven't read anything in this thread about it. Just sharing in case anyone else runs into it. Easy enough fix. Behind the legs there is a little tab that you have to pull up so you can attach the bottom half of his robot legs (cab) or his combiner leg skeletons. Somehow one of my tabs was installed backwards so the inner portion (with molded details) was facing out and the outer portion (smooth plastic) was facing in. It was causing the robot leg not to lock in tight and any shaking of that leg would cause it to rattle. It was still stable enough though. Easy enough fix by unscrewing four screws on that thigh, sliding the part out, flipping it, and then screwing everything back together. I can't imagine how this would have affected combined mode since I decided to fix it before attempting that. Now he's stable as a champ in both modes.