Recent FB purchase

Recent FB £5 pickup. We had the green tracks with the 'coded messages' before but not had a train that was using them. So when I saw this I messaged the seller immedately. When we unpacked it to play with it, it turned out the train was broken and despite the motor turning and passing the movement to the wheels, putting the train down resulted in something skipping and it not going forward.

Took it apart and after all the cogs fell out I found the drive axle's cog was snapped and loose on the axle. I could just superglue it but there's a gap between the teeth and it won't run as it should. For now I've used another axle from some spares I have. Still not matching the blue colour of the engine, but will get that sorted soon. For now, it works.