Sorry, it's a 2002 Plus 8. It's been back to the garage 3 or 4 times now, but with no joy. Initially they cleaned the stepper motor, but that didn't work, so they put a new one in and that hasn't worked either. The Morgan factory then gave them a sequence to drive at certain speeds, but that hasn't worked either. It doesn't happen straight away, but then starts to feel its pulling away when not pressing the accelerator. When I start the engine it revs above 2000.