It will take a slighly aft CG, but NOT ON THE FIRST FLIGHT!!!!!!!! Smaller Caps like to snap on landing you if you arent carful, and a more aft CG will make it do that much worse. Fly it on the stock CG for a little while, and then move it back slowly. Every time you move it back you need to take it up high, slow it down to landing, and make it snap. That way you will see how the change in CG affected it's landing habits. Remember when it snaps, to let go of the elevator. If you hold in elevator to get it to pull out of the dive, it could, and probably will, go into a spin.