Rick,

I had this same problem with my wife's trainer. It turned out that the wing was warped. If it is a flat bottom wing, it is pretty easy to tell if it is warped. You can look at the wing either head on or from the end and see warp if it is there. Another way to check is to get two long dowels or yard sticks. Stick one of them against the wing near the fuselage and another one at the tip. If the wing has no warp then they will line up when looked at from the side. I think that it is most important that both wing halves are the same.

If you decide that a wing is warped, you can have someone twist it for you and then using a heat gun, you get all of of the new wrinkles out. It works really well and this might solve your problem.

The other thing that you might want to check is that your plane is balanced laterally. Pick it up by the spinner and under the tail. If the plane falls to the same side every time you should add weight to the other side.

I hope this helps,

Herb