I didn't have a fit problem with mine. It was quite snug, with little, if any slop. I think parts fit on this plane is some of the best I've seen. This model uses an elevator strip on the canard, the canard is not a moveable airfoil as on the full size. I don't know how much difference that detail makes in the way it flys. It was suggested to me that it would be less pitch sensative if it was changed to a moveable airfoil, instead of being fixed with a movable trailing edge (elevator), not being an engineer, I leave that to others. I have only two flights, due to weather and getting up enough nerve for #3....Cliff