Sometimes when i start my abarth from cold it gives mad kangaroo jumps wheneva i touch the pedal, and it gets worse if i lift of. the only way ive found 2 get round it is to floor it in 1st and second for first few hundred yards and that seems 2 cure it. i tried going slow or waiting for it 2 warm up but neither worked. any1 else had this prob, or know of a cure?