I`ve had the Austflight pneumatic tail wheel since the modification, from them, first came out, many years ago... I have it connected to the rudder cables but I have the cables to the wheel further up the cables to the rudder than in Kiwi`s photo... I also took the springs out, for a couple of reasons, many years ago, however, i`m not suggesting others do as I`ve done.
Keep in mind, even with the springs, the cables to the wheel need to be the correct length, if too short, the wheel will turn before the rudder, if too long the rudder will turn and the wheel may not turn at all, or, while on the ground, the wheel may turn in the opposite direction and it doesn't take much for a novice pilot to lose control.
On take off, once the wheel comes up off the ground, if the cables to the wheel are too short, you will still feel pressure on the rudder pedals but you may not be getting the rudder input you think you are, which could cause, runway loss of control.
Frank.