Well, I couldnt, as I only got a couple of flights on mine today. The right thrust was really bugging me, and one deadstick downwind landing on the last flight made me quit while i was ahead. I think every little bit would help, especially in keeping the balance close from the beginning to end of the flight. And if the general thinking is a CG of 6 inches or further back, then moving things aft seems to be a logical choice.