On these models, there is almost no torque factor. Failure to turn is typically caused by one of two things:
1. CG too far fore or aft.
2. Too little airflow over the control surface.
#1 can be solved by correcting the CG. #2 can be solved by adding power.
I have had mine in a high alpha near-hover, applied full right aileron, and it still tracks to the left. While I'm sure torque plays a small part in this, there's really not much you can do about it, except to make it a twin with counter-rotating props.