When I picked my Cabrio in early April, the dealer rep stated they had already been checking and servicing ALL the shifter boxes prior to delivery. There was a change in the shift button and knob itself apparently around January at the factory. They also stated they knew that the shifters needed to be lubed and have the cable adjusted.
We haven't had any problems with the shifter or gearbox. Works smooth as cold snot on a hot doorknob.
;-)