Ford S-MAX - Throttle Hang Up - policarcass

I have a 163ps diesel manual S-Max that despite extensive investigation and installation of latest engine mapping software by Ford still exhibits an annoying throttle hang between gears - as if you havent lifted off the accelerator.

After the latest of 4 visits to the dealers I am told this is a characteristic of this particular engine and is to protect the dual fly wheel from failing - surely in a £32,000 car it should be a pleasure to drive?