FYI, I bought the Crazy Clown and I'm in the process of priming and painting the parts. I'm extremely happy to have found that my local hobby shop still carries Gunze Sangyo paint, I loved working with that brand.
After studying the instructions and the parts, I still can not figure how the arm raises and lowers. I guess it will make sense as I assemble the gears which are quite complex on this. If this thing is too noisy and vibrates too much I'll just use it as a static model, it looks really nice which is all it really needs to do.