I have a 1 yr old Mitsubishi Space Star (Dutch designed and built) with
6,500 km on the clock. It has had a problem with the auto transmission for several months which has not been fixed by the dealer. When it goes through 1st to second gear the motor revs (revs go from 3500 to 4200) between gears.. The change seems slow and is not synchronised with the throttle. This only happens for the first change after the car has been standing for several hours e.g in the morning after standing all night. It does not happen after it is warmed-up. It is under warranty but the dealers have no idea where to start.Anyone got any ideas? TIA.