Are you sure your nose gear is straight ahead? If you are compensating with rudder, (nose gear) it's just steering it, once it's in the air if it's straight ahead flying, it's more likely your nose gear tracking than anything. With a tricycle gear plane, torque won't have much affect on tracking, specifically in a 40 or 60 size. You would have to have a LOT of right thrust built in to make a significant difference on take off with a trainer, like 8 or more degrees. Check your ground handling even just slowly, make sure it's going straight ahead, then adjust your nose gear