Hello, my Omega 3.2l switches very much into the 4 gears in sport mode. At about 5500 rpm, the 4th gears go in, which are 160/170 km/h after Tacho. In the “normal” driving program, the gears switch in the 4th at around 100 km/h. I feel that the gears also somehow go into an overdrive. What can that be? Thank you in advance for information and help Paul