had 2, one NIB and the other was 21.5 lbs dry, it flew nice once in the air but could of used allot more power. the gear was a POS and collapsed on most take off rolls and on those few occasions it held up on the take off, it collapsed on landing so i sold the both of them for less then the cost of one
i started off in the middle of their recommended CG which IIRC was 150mm and i shifted it back a few times mostly to help it get off the ground quicker because of the gear issues.