RE: Subaru Impreza WRC 1/10 Bycmo
Alright madmunkey,
The weakness is inside the diff, (the round black part that the driveshafts connect to)
This can easily be fixed by locking the box, to do this you take it apart and put chemical metal inside to lock the gears together.
You need to take it apart and put it back together after using the chemical metal straight away while it's fresh.
If you are stuck I'm sure me or dus can help.
By locking the diff you will also improve traction, this is like fitting a LSD (limited slip diff) to a real car.