Carl,

Something is not straight. Based on everything you have done, the rudder could be leaning to one side, the elevator of the left side could be down, although it may not be obvious but the motor can be off slightly to the left. Place the plane in an upright position and balance it there with foam or somethig so that there is equal distance from the wing tips to the surface you have the plane sitting on.

Now stand back from the plane five or ten feet and eyeball the elevator to see if it is also level in relation to the wings. You can also pick a spot on the center of the fuselage back behind the wing and measure from the wingtip to that spot on both wingtips. The measurement should be equal or very very close.

Have you hand launched it at anything less than full throttle and if you did, did it veer to the left as hard?