So I took it all apart again and found a tiny grain of sand I think in one of the pinion gears and removed it - all now fixed!
I feel a bit stupid now but thanks for all the suggestions!
The drive shaft is all in place, bearings are good, I think it looked wobbly as nothing was holding it down...
Hi all,
Very new to RC and bought my TT02 prebuilt by someone else.
Had a few little issues but the big one I've just got is a grinding noise, please see the video below.
I can't work out if it's the gears or the drive shaft that's causing it? It was fine but just had a rather brutal bash...