Help! Ragdoll problems!

Help me! I’m having trouble with the ‘walking’ ragdoll thing,
what you’re supposed to do is

  1. create a ragdoll and weld a box or something to the back of a ragdoll,
    2)then you create wheels onto the box or whatever and weld each foot to the corresponding wheel.
  2. then you keep upright the box thing, and then it’s done!

But it doesn’t work for me! It falls over for no reason and the wheels dont move!?

HELP!

1 box
2 wheels (or saws)
axis constraint
thrusters
shouldn’t be to hard to figure out

It’s very finicky, I suggest using sawblades and just practicing your ass off.