All stabilizers are based on the same concept. You have to understand this to set them up properly and to get a feel for how to use them.
The basis of the concept is that the momentum of the weight above the pivot point and the weight below the pivot point needs to be almost equal. If the weight below the pivot point is too heavy it will accelerate and decelerate more slowly than the weight above and cause it to swing.
If you have too much weight above the pivot point it will try to flip upside down. There is an optimum weight difference between the camera above the pivot point and the arch below that when accelerated and decelerated just right does not swing or twist.
Secondly the balance between the front weight and the bottom weight needs to be correct so that it doesn't want to torque. This is the down fall of all the C shaped stabilizers. They are very difficult to set up and use as they can never be perfectly balanced for motion in all directions as there is always more weight out on the center of the arch relative to every other direciton of movement.
The third element in the equation is friction in the gimbal. This one will always cause problems and you just need to know it's going to cause some swing to your cam. This is a case where being too steady with your hold can be counter productive. If you angle the handle very very slowly you'll see that most systems will tip ever so slightly until the gimble breaks the stiction and then swings. They almost work better when you wiggle your hand as you move. This keeps the gimble from sticking at all and actually tends to give you a smoother image in the end.
In any case try to understand the concept of momentum between the top and bottom. Momentum is velocity times mass. If the top and bottom are equal you can add any velocity to the system you want and it will stay balanced. As we want the cam to stay on top we need there to be slightly more mass on the bottom and thus we need to be very smooth in the acceleration and deceleration of the system to keep it from swinging.
Now add a little unbalance between the front and the lower weight plus a little friction in the gimble and you have a recipe for pulling your hair out