I'm going to pick up a new motor.
The same setup has been in the car for about 4 months and done a few race days so it been put through its paces.
I've opened up the motor an the copper on the stator has melted into the plastic cover on the stator so I'm 100% sure it's a motor issue. Now I just hope it hasn't hurt the tekin or it will be a while before I can race again.