I fixed the tower, now it turns (F, H) but can't go up/down. A 4-speed gearbox was added as on the real T-80U. The engine has been adjusted, now it outputs 60 km / h in 4th gear (the gearbox is mechanical to switch it, first press Q to turn on the manual shift, then X to shift the gear to the next and Z to switch to the previous one). Realistic sounds of a gas turbine engine were made, and a realistic sound of a shot.