My friend and I both have NexStar trainers. In order to have the plane fly straight, we both have to trim the ailerons to the left (so much so that my friend had to adjust the clevises 2 full turns in the proper direction for the ailerons, cause he didn't have any more play with the trim adjustment on his radio).

We are both beginners and when we takeoff and just get in the air, the plane seems to wanna go to the right all the time. This happens no matter which direction the wind is coming from (just thought I'd mention that even though we take off into the wind anyways). Our instructor has our planes trimmed so they fly straight, it just seems to be a problem when we takeoff( this dosen't seem to be a problem when the instructor does the takeoff ). My instructor says that we have to give additional left aileron input when we takeoff.

Is the fact that the plane naturally pulls to the right, enhanced on takeoff (even though the trim is set to have it fly straight?) Might this be why we seem to have to give additional left aileron input on takeoff.