+Bad experience building Ferrari GT44 8-gears gearbox MOC
+: cheap compared to the official LEGO MOC via Bricklink -: quality of the plastic parts, especially axes, pins and gears. The 8-gears Ferrari GT44 Gearbox MOC was quite hard to build, even had to use vaseline to get gears on an axis rod. And after build lots of trouble running it, only 4 of the 8 gears worked and after an improvement fix by myself 6 of 8 gears worked; the two highest gears had such friction that the motor even with fresh batteries was not strong enough. I submitted my complaints and al waiting three months now on answers or solution