![Lego 42112 concrete mixer truck advise. It doesn't move smoothly anymore, it's stuttering every few steps. Anyone know how to fix this? I suspect my son force it when it's in parked Lego 42112 concrete mixer truck advise. It doesn't move smoothly anymore, it's stuttering every few steps. Anyone know how to fix this? I suspect my son force it when it's in parked](https://i.redd.it/bh4p014mvfl71.jpg)
Lego 42112 concrete mixer truck advise. It doesn't move smoothly anymore, it's stuttering every few steps. Anyone know how to fix this? I suspect my son force it when it's in parked
![REVIEW] 42112 - Cement Mixer - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums REVIEW] 42112 - Cement Mixer - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums](https://i.imgur.com/qEg3Sb7.jpg)
REVIEW] 42112 - Cement Mixer - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
![MOC] Concrete Mixer Truck - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums MOC] Concrete Mixer Truck - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums](https://live.staticflickr.com/65535/50077539733_a5798b5ca7_b.jpg)