Creating Revolute Joints at Runtime?

So - I get one of two outcomes, depending on how I attach:

<img src="http://johnnysix.net/games/rrj.png" border="0">

<img src="http://johnnysix.net/games/rrj2.png" border="0">

Is this not possible, or is there something I'm missing?

Test game [ press space while holding mouse to spawn a tank ]

http://johnnysix.net/games/rrj/

CAPX :

http://johnnysix.net/games/rrj.capx

mmmhh wrong capx.

haha, updated link! :)

You forgot to apply image point references.

There a pic it should work what you are looking

<img src="http://i.imgur.com/GEgCMYl.png" border="0" />

PD: Ignore positions when you create an object