If you want to keep things pretty basic, you don't need code blocks. You can add them via the Scene Designer and then double click to edit their properties.
I've had stick joints and hinge joints work. I think the motors is where I was getting confused. But I also think that is when the code blocks come into play, no?
Edit: and I agree about the mixed graphics.
@Epic, can you also try sliding joint? It used to work for me way back. Also, if you think graphics can be better. I can post it up to Forge and we can swap in a few actor appearances which should be easy.
I'll definitely put up this game on Forge so that you can look at my joint settings and experiment with them. Sometimes this afternoon.
The big one missing now is a sliding joint though.