Depending on how large the head of the racket is and how you mount the racket you loose your 360 rotation. In the picture it looks like you have to pull the top strings from off center which creates more friction and less tension on the strings pulled at the head. That turntable is really close to the Wise also.
Everyone has the right to be stupid... it's just that some people abuse the privilege...
Balance - 31.0 cm, Weight - 358 g, SW - 346 Kgcm^2