Our Motorhome goes very well except I have noticed that there is no "push" in the back when accelerating.I have often wondered if the Turbo was working correctly.I have read about checking the wastegate but if that was siezed would this generate a fault code and put the light on? I have looked at what I think is the wastegate linkage and I cannot move it.Should this move easily? We had a 2.5TD before and this gave a pronounced surge as the turbo cut-in which this one doesn't.Any help would be great.Thank you.